Web login broken. browser ask to download index.php instead of displaying login screen

I have no idea what happened. from one day to the next I am unable to get connection via webdav. I tried to login via the web UI, but then it got strange. Instead of the login page the browser ask me to download the index.php file. This means I cant access any accounts.

I then tried to do a re-install and run https://domain.com/owncloud/setup-owncloud.php

But the same thing. I am only asked if I want to download the file.

Help much appriciated.

Steps to reproduce
1. well. try to log in to the web UI

Expected behaviour
a login screen (index.php) should be presented.

Actual behaviour
The browser ask if I want to download index.php

Server configuration

Database: sql
PHP version: 5,5 (tried 5.6 and 7 as well)
ownCloud version (see ownCloud admin page): maybee 9 but not sure
Updated from an older ownCloud or fresh install: update ( but the problems came later)
ownCloud log (data/owncloud.log, see https://central.owncloud.org/t/how-to-find-webserver-or-oc-logfile-enable-php-logfile/808):

{"reqId":"VsG8sU1CdSYADeOhJNUAAAAf","remoteAddr":"131.165.167.161","app":"PHP","message":"touch(): Unable to create file \/home\/hchaased\/public_html\/omnidata\/data\/owncloud.log because No such file or directory at \/home\/hchaased\/public_html\/omnidata\/lib\/private\/log\/owncloud.php#53","level":3,"time":"2016-02-15T11:55:29+00:00"}
{"reqId":"VsG81U1CdSYADeOi3AgAAAAg","remoteAddr":"131.165.167.161","app":"core","message":"Login failed: 'hc' (Remote IP: '131.165.167.161')","level":2,"time":"2016-02-15T11:56:05+00:00"}
{"reqId":"VsG-o01CdSYADe69NIkAAAAV","remoteAddr":"131.165.167.161","app":"index","message":"Exception: {\"Exception\":\"Doctrine\\\\DBAL\\\\Exception\\\\DriverException\",\"Message\":\"An exception occurred while executing 'SELECT \\\"uid\\\", \\\"displayname\\\" FROM \\\"oc_users\\\" WHERE LOWER(\\\"uid\\\") = LOWER(?)' with params [\\\"HC\\\"]:\\n\\nSQLSTATE[HY000]: General error: 17 database schema has changed\",\"Code\":0,\"Trace\":\"#0 \\\/home\\\/hchaased\\\/public_html\\\/omnidata\\\/3rdparty\\\/doctrine\\\/dbal\\\/lib\\\/Doctrine\\\/DBAL\\\/DBALException.php(116): Doctrine\\\\DBAL\\\\Driver\\\\AbstractSQLiteDriver->convertException('An exception oc...', Object(Doctrine\\\\DBAL\\\\Driver\\\\PDOException))\\n#1 \\\/home\\\/hchaased\\\/public_html\\\/omnidata\\\/3rdparty\\\/doctrine\\\/dbal\\\/lib\\\/Doctrine\\\/DBAL\\\/Statement.php(172): Doctrine\\\\DBAL\\\\DBALException::driverExceptionDuringQuery(Object(Doctrine\\\\DBAL\\\\Driver\\\\PDOSqlite\\\\Driver), Object(Doctrine\\\\DBAL\\\\Driver\\\\PDOException), 'SELECT \\\"uid\\\", \\\"...', Array)\\n#2 \\\/home\\\/hchaased\\\/public_html\\\/omnidata\\\/lib\\\/private\\\/db\\\/statementwrapper.php(73): Doctrine\\\\DBAL\\\\Statement->execute(Array)\\n#3 \\\/home\\\/hchaased\\\/public_html\\\/omnidata\\\/lib\\\/private\\\/user\\\/database.php(211): OC_DB_StatementWrapper->execute(Array)\\n#4 \\\/home\\\/hchaased\\\/public_html\\\/omnidata\\\/lib\\\/private\\\/user\\\/database.php(258): OC_User_Database->loadUser('HC')\\n#5 \\\/home\\\/hchaased\\\/public_html\\\/omnidata\\\/lib\\\/private\\\/user\\\/manager.php(133): OC_User_Database->userExists('HC')\\n#6 \\\/home\\\/hchaased\\\/public_html\\\/omnidata\\\/lib\\\/private\\\/user\\\/session.php(158): OC\\\\User\\\\Manager->get('HC')\\n#7 \\\/home\\\/hchaased\\\/public_html\\\/omnidata\\\/lib\\\/private\\\/app.php(263): OC\\\\User\\\\Session->getUser()\\n#8 \\\/home\\\/hchaased\\\/public_html\\\/omnidata\\\/lib\\\/private\\\/app.php(104): OC_App::getEnabledApps()\\n#9 \\\/home\\\/hchaased\\\/public_html\\\/omnidata\\\/lib\\\/private\\\/user.php(178): OC_App::loadApps(Array)\\n#10 \\\/home\\\/hchaased\\\/public_html\\\/omnidata\\\/lib\\\/base.php(633): OC_User::setupBackends()\\n#11 \\\/home\\\/hchaased\\\/public_html\\\/omnidata\\\/lib\\\/base.php(1081): OC::init()\\n#12 \\\/home\\\/hchaased\\\/public_html\\\/omnidata\\\/index.php(37): require_once('\\\/home\\\/hchaased\\\/...')\\n#13 {main}\",\"File\":\"\\\/home\\\/hchaased\\\/public_html\\\/omnidata\\\/3rdparty\\\/doctrine\\\/dbal\\\/lib\\\/Doctrine\\\/DBAL\\\/Driver\\\/AbstractSQLiteDriver.php\",\"Line\":85}","level":3,"time":"2016-02-15T12:08:04+00:00"}
{"reqId":"VsG-sU1CdSYADfCxJy8AAAAH","remoteAddr":"131.165.167.161","app":"PHP","message":"unlink(): No such file or directory at \/home\/hchaased\/public_html\/omnidata\/lib\/private\/helper.php#357","level":3,"time":"2016-02-15T12:08:19+00:00"}
{"reqId":"VsG-sU1CdSYADfCxJy8AAAAH","remoteAddr":"131.165.167.161","app":"PHP","message":"rmdir(\/tmp\/oc_tmp_o9PDX3-folder\/news\/vendor\/bin): Directory not empty at \/home\/hchaased\/public_html\/omnidata\/lib\/private\/helper.php#355","level":3,"time":"2016-02-15T12:08:19+00:00"}
{"reqId":"VsG-sU1CdSYADfCxJy8AAAAH","remoteAddr":"131.165.167.161","app":"PHP","message":"rmdir(\/tmp\/oc_tmp_o9PDX3-folder\/news\/vendor): Directory not empty at \/home\/hchaased\/public_html\/omnidata\/lib\/private\/helper.php#355","level":3,"time":"2016-02-15T12:08:19+00:00"}
{"reqId":"VsG-sU1CdSYADfCxJy8AAAAH","remoteAddr":"131.165.167.161","app":"PHP","message":"rmdir(\/tmp\/oc_tmp_o9PDX3-folder\/\/news): Directory not empty at \/home\/hchaased\/public_html\/omnidata\/lib\/private\/helper.php#361","level":3,"time":"2016-02-15T12:08:19+00:00"}
{"reqId":"VsG-sU1CdSYADfCxJy8AAAAH","remoteAddr":"131.165.167.161","app":"PHP","message":"unlink(): No such file or directory at \/home\/hchaased\/public_html\/omnidata\/lib\/private\/helper.php#357","level":3,"time":"2016-02-15T12:08:20+00:00"}
{"reqId":"VsG-sU1CdSYADfCxJy8AAAAH","remoteAddr":"131.165.167.161","app":"PHP","message":"rmdir(\/tmp\/oc_tmp_o9PDX3-folder\/news\/vendor\/bin): Directory not empty at \/home\/hchaased\/public_html\/omnidata\/lib\/private\/helper.php#355","level":3,"time":"2016-02-15T12:08:20+00:00"}
{"reqId":"VsG-sU1CdSYADfCxJy8AAAAH","remoteAddr":"131.165.167.161","app":"PHP","message":"rmdir(\/tmp\/oc_tmp_o9PDX3-folder\/news\/vendor): Directory not empty at \/home\/hchaased\/public_html\/omnidata\/lib\/private\/helper.php#355","level":3,"time":"2016-02-15T12:08:20+00:00"}
{"reqId":"VsG-sU1CdSYADfCxJy8AAAAH","remoteAddr":"131.165.167.161","app":"PHP","message":"rmdir(\/tmp\/oc_tmp_o9PDX3-folder\/news): Directory not empty at \/home\/hchaased\/public_html\/omnidata\/lib\/private\/helper.php#355","level":3,"time":"2016-02-15T12:08:20+00:00"}
{"reqId":"VsG-sU1CdSYADfCxJy8AAAAH","remoteAddr":"131.165.167.161","app":"PHP","message":"rmdir(\/tmp\/oc_tmp_o9PDX3-folder): Directory not empty at \/home\/hchaased\/public_html\/omnidata\/lib\/private\/helper.php#361","level":3,"time":"2016-02-15T12:08:20+00:00"}
{"reqId":"VsL7XU1CdSYAAqZntn0AAAAK","remoteAddr":"131.165.167.161","app":"core","message":"Login failed: 'hc' (Remote IP: '131.165.167.161')","level":2,"time":"2016-02-16T10:35:09+00:00"}
{"reqId":"VsMK2E1CdSYAAuaotyIAAAAM","remoteAddr":"131.165.167.161","app":"core","message":"Login failed: 'hc' (Remote IP: '131.165.167.161')","level":2,"time":"2016-02-16T11:41:12+00:00"}
{"reqId":"VsMYhU1CdSYAAyz0pCgAAAAN","remoteAddr":"131.165.167.161","app":"core","message":"Login failed: 'hc' (Remote IP: '131.165.167.161')","level":2,"time":"2016-02-16T12:39:33+00:00"}
{"reqId":"VtacyE1CdSYADPIz28gAAAAL","remoteAddr":"87.104.26.132","app":"PHP","message":"Cannot modify header information - headers already sent by (output started at \/home\/hchaased\/public_html\/omnidata\/3rdparty\/sabre\/http\/lib\/Sapi.php:70) at \/home\/hchaased\/public_html\/omnidata\/3rdparty\/sabre\/http\/lib\/Sapi.php#58","level":3,"time":"2016-03-02T07:56:56+00:00"}
{"reqId":"VtarR01CdSYADS7@yKwAAAAf","remoteAddr":"94.144.63.90","app":"core","message":"Login failed: 'hc' (Remote IP: '94.144.63.90')","level":2,"time":"2016-03-02T08:58:47+00:00"}
{"reqId":"VvpOrU1CdSYAA8YiYgYAAAAB","remoteAddr":"131.165.167.161","app":"core","message":"Login failed: 'arb' (Remote IP: '131.165.167.161')","level":2,"time":"2016-03-29T09:45:18+00:00"}
{"reqId":"VvpOt01CdSYAA8ceN3YAAAAF","remoteAddr":"131.165.167.161","app":"core","message":"Login failed: 'arb' (Remote IP: '131.165.167.161')","level":2,"time":"2016-03-29T09:45:31+00:00"}
{"reqId":"VvpO4U1CdSYAA8dSL0UAAAAY","remoteAddr":"131.165.167.161","app":"core","message":"Login failed: 'hcarb' (Remote IP: '131.165.167.161')","level":2,"time":"2016-03-29T09:46:09+00:00"}
{"reqId":"Vv0LGk1CdSYAD3SXITAAAAAK","remoteAddr":"131.165.167.161","app":"index","message":"Exception: {\"Exception\":\"OC\\\\NeedsUpdateException\",\"Message\":\"\",\"Code\":0,\"Trace\":\"#0 \\\/home\\\/hchaased\\\/public_html\\\/omnidata\\\/lib\\\/private\\\/app.php(118): OC_App::loadApp('files')\\n#1 \\\/home\\\/hchaased\\\/public_html\\\/omnidata\\\/lib\\\/private\\\/util.php(130): OC_App::loadApps(Array)\\n#2 \\\/home\\\/hchaased\\\/public_html\\\/omnidata\\\/lib\\\/base.php(848): OC_Util::setupFS()\\n#3 \\\/home\\\/hchaased\\\/public_html\\\/omnidata\\\/index.php(39): OC::handleRequest()\\n#4 {main}\",\"File\":\"\\\/home\\\/hchaased\\\/public_html\\\/omnidata\\\/lib\\\/private\\\/app.php\",\"Line\":139}","level":3,"time":"2016-03-31T11:33:46+00:00"}
{"reqId":"Vv0LNU1CdSYAD3kNiHUAAAAZ","remoteAddr":"131.165.167.161","app":"core","message":"starting upgrade from 8.2.2.2 to 8.2.3.2","level":0,"time":"2016-03-31T11:34:13+00:00","method":"GET","url":"\/omnidata\/core\/ajax\/update.php?requesttoken=MiVmG0k0fyoIRHkhBjQZBFxpUFY6BmUUdn0kGgo3%3AKlTyyWGEjk8t0pT%2F6X88mD7SANEtBX"}
{"reqId":"Vv0LNU1CdSYAD3kNiHUAAAAZ","remoteAddr":"131.165.167.161","app":"no app in context","message":"Exception: {\"Exception\":\"Symfony\\\\Component\\\\Routing\\\\Exception\\\\RouteNotFoundException\",\"Message\":\"Unable to generate a URL for the named route \\\"calendar_index\\\" as such route does not exist.\",\"Code\":0,\"Trace\":\"#0 \\\/home\\\/hchaased\\\/public_html\\\/omnidata\\\/lib\\\/private\\\/route\\\/router.php(325): Symfony\\\\Component\\\\Routing\\\\Generator\\\\UrlGenerator->generate('calendar_index', Array, false)\\n#1 \\\/home\\\/hchaased\\\/public_html\\\/omnidata\\\/lib\\\/private\\\/urlgenerator.php(65): OC\\\\Route\\\\Router->generate('calendar_index', Array)\\n#2 \\\/home\\\/hchaased\\\/public_html\\\/omnidata\\\/lib\\\/private\\\/helper.php(66): OC\\\\URLGenerator->linkToRoute('calendar_index', Array)\\n#3 \\\/home\\\/hchaased\\\/public_html\\\/omnidata\\\/lib\\\/public\\\/util.php(301): OC_Helper::linkToRoute('calendar_index', Array)\\n#4 \\\/home\\\/hchaased\\\/public_html\\\/omnidata\\\/apps\\\/calendar\\\/appinfo\\\/app.php(25): OCP\\\\Util::linkToRoute('calendar_index')\\n#5 \\\/home\\\/hchaased\\\/public_html\\\/omnidata\\\/lib\\\/private\\\/app.php(160): require_once('\\\/home\\\/hchaased\\\/...')\\n#6 \\\/home\\\/hchaased\\\/public_html\\\/omnidata\\\/lib\\\/private\\\/app.php(141): OC_App::requireAppFile('calendar')\\n#7 \\\/home\\\/hchaased\\\/public_html\\\/omnidata\\\/lib\\\/private\\\/app.php(1171): OC_App::loadApp('calendar', false)\\n#8 \\\/home\\\/hchaased\\\/public_html\\\/omnidata\\\/lib\\\/private\\\/installer.php(222): OC_App::updateApp('calendar')\\n#9 \\\/home\\\/hchaased\\\/public_html\\\/omnidata\\\/lib\\\/private\\\/installer.php(252): OC_Installer::updateApp(Array)\\n#10 \\\/home\\\/hchaased\\\/public_html\\\/omnidata\\\/lib\\\/private\\\/updater.php(509): OC_Installer::updateAppByOCSId('168707')\\n#11 \\\/home\\\/hchaased\\\/public_html\\\/omnidata\\\/lib\\\/private\\\/updater.php(323): OC\\\\Updater->upgradeAppStoreApps(Array)\\n#12 \\\/home\\\/hchaased\\\/public_html\\\/omnidata\\\/lib\\\/private\\\/updater.php(205): OC\\\\Updater->doUpgrade('8.2.3.2', '8.2.2.2')\\n#13 \\\/home\\\/hchaased\\\/public_html\\\/omnidata\\\/core\\\/ajax\\\/update.php(111): OC\\\\Updater->upgrade()\\n#14 {main}\",\"File\":\"\\\/home\\\/hchaased\\\/public_html\\\/omnidata\\\/3rdparty\\\/symfony\\\/routing\\\/Symfony\\\/Component\\\/Routing\\\/Generator\\\/UrlGenerator.php\",\"Line\":134}","level":3,"time":"2016-03-31T11:34:21+00:00","method":"GET","url":"\/omnidata\/core\/ajax\/update.php?requesttoken=MiVmG0k0fyoIRHkhBjQZBFxpUFY6BmUUdn0kGgo3%3AKlTyyWGEjk8t0pT%2F6X88mD7SANEtBX"}
{"reqId":"Vv0LNU1CdSYAD3kNiHUAAAAZ","remoteAddr":"131.165.167.161","app":"PHP","message":"unlink(): No such file or directory at \/home\/hchaased\/public_html\/omnidata\/lib\/private\/helper.php#357","level":3,"time":"2016-03-31T11:34:28+00:00","method":"GET","url":"\/omnidata\/core\/ajax\/update.php?requesttoken=MiVmG0k0fyoIRHkhBjQZBFxpUFY6BmUUdn0kGgo3%3AKlTyyWGEjk8t0pT%2F6X88mD7SANEtBX"}
{"reqId":"Vv0LNU1CdSYAD3kNiHUAAAAZ","remoteAddr":"131.165.167.161","app":"PHP","message":"rmdir(\/tmp\/oc_tmp_LfIb9L-folder\/news\/vendor\/bin): Directory not empty at \/home\/hchaased\/public_html\/omnidata\/lib\/private\/helper.php#355","level":3,"time":"2016-03-31T11:34:28+00:00","method":"GET","url":"\/omnidata\/core\/ajax\/update.php?requesttoken=MiVmG0k0fyoIRHkhBjQZBFxpUFY6BmUUdn0kGgo3%3AKlTyyWGEjk8t0pT%2F6X88mD7SANEtBX"}
{"reqId":"Vv0LNU1CdSYAD3kNiHUAAAAZ","remoteAddr":"131.165.167.161","app":"PHP","message":"rmdir(\/tmp\/oc_tmp_LfIb9L-folder\/news\/vendor): Directory not empty at \/home\/hchaased\/public_html\/omnidata\/lib\/private\/helper.php#355","level":3,"time":"2016-03-31T11:34:28+00:00","method":"GET","url":"\/omnidata\/core\/ajax\/update.php?requesttoken=MiVmG0k0fyoIRHkhBjQZBFxpUFY6BmUUdn0kGgo3%3AKlTyyWGEjk8t0pT%2F6X88mD7SANEtBX"}
{"reqId":"Vv0LNU1CdSYAD3kNiHUAAAAZ","remoteAddr":"131.165.167.161","app":"PHP","message":"rmdir(\/tmp\/oc_tmp_LfIb9L-folder\/\/news): Directory not empty at \/home\/hchaased\/public_html\/omnidata\/lib\/private\/helper.php#361","level":3,"time":"2016-03-31T11:34:28+00:00","method":"GET","url":"\/omnidata\/core\/ajax\/update.php?requesttoken=MiVmG0k0fyoIRHkhBjQZBFxpUFY6BmUUdn0kGgo3%3AKlTyyWGEjk8t0pT%2F6X88mD7SANEtBX"}
{"reqId":"Vv0LNU1CdSYAD3kNiHUAAAAZ","remoteAddr":"131.165.167.161","app":"core","message":"Exception: {\"Exception\":\"Exception\",\"Message\":\"App can't be installed because it is not compatible with this version of ownCloud\",\"Code\":0,\"Trace\":\"#0 \\\/home\\\/hchaased\\\/public_html\\\/omnidata\\\/lib\\\/private\\\/installer.php(199): OC_Installer::checkAppsIntegrity(Array, '\\\/tmp\\\/oc_tmp_LfI...', '\\\/tmp\\\/oc_tmp_DtT...', false)\\n#1 \\\/home\\\/hchaased\\\/public_html\\\/omnidata\\\/lib\\\/private\\\/installer.php(252): OC_Installer::updateApp(Array)\\n#2 \\\/home\\\/hchaased\\\/public_html\\\/omnidata\\\/lib\\\/private\\\/updater.php(509): OC_Installer::updateAppByOCSId('168040')\\n#3 \\\/home\\\/hchaased\\\/public_html\\\/omnidata\\\/lib\\\/private\\\/updater.php(323): OC\\\\Updater->upgradeAppStoreApps(Array)\\n#4 \\\/home\\\/hchaased\\\/public_html\\\/omnidata\\\/lib\\\/private\\\/updater.php(205): OC\\\\Updater->doUpgrade('8.2.3.2', '8.2.2.2')\\n#5 \\\/home\\\/hchaased\\\/public_html\\\/omnidata\\\/core\\\/ajax\\\/update.php(111): OC\\\\Updater->upgrade()\\n#6 {main}\",\"File\":\"\\\/home\\\/hchaased\\\/public_html\\\/omnidata\\\/lib\\\/private\\\/installer.php\",\"Line\":350}","level":3,"time":"2016-03-31T11:34:28+00:00","method":"GET","url":"\/omnidata\/core\/ajax\/update.php?requesttoken=MiVmG0k0fyoIRHkhBjQZBFxpUFY6BmUUdn0kGgo3%3AKlTyyWGEjk8t0pT%2F6X88mD7SANEtBX"}
{"reqId":"Vv0LNU1CdSYAD3kNiHUAAAAZ","remoteAddr":"131.165.167.161","app":"PHP","message":"unlink(): No such file or directory at \/home\/hchaased\/public_html\/omnidata\/lib\/private\/helper.php#357","level":3,"time":"2016-03-31T11:34:34+00:00"}
{"reqId":"Vv0LNU1CdSYAD3kNiHUAAAAZ","remoteAddr":"131.165.167.161","app":"PHP","message":"rmdir(\/tmp\/oc_tmp_LfIb9L-folder\/news\/vendor\/bin): Directory not empty at \/home\/hchaased\/public_html\/omnidata\/lib\/private\/helper.php#355","level":3,"time":"2016-03-31T11:34:34+00:00"}
{"reqId":"Vv0LNU1CdSYAD3kNiHUAAAAZ","remoteAddr":"131.165.167.161","app":"PHP","message":"rmdir(\/tmp\/oc_tmp_LfIb9L-folder\/news\/vendor): Directory not empty at \/home\/hchaased\/public_html\/omnidata\/lib\/private\/helper.php#355","level":3,"time":"2016-03-31T11:34:34+00:00"}
{"reqId":"Vv0LNU1CdSYAD3kNiHUAAAAZ","remoteAddr":"131.165.167.161","app":"PHP","message":"rmdir(\/tmp\/oc_tmp_LfIb9L-folder\/news): Directory not empty at \/home\/hchaased\/public_html\/omnidata\/lib\/private\/helper.php#355","level":3,"time":"2016-03-31T11:34:34+00:00"}
{"reqId":"Vv0LNU1CdSYAD3kNiHUAAAAZ","remoteAddr":"131.165.167.161","app":"PHP","message":"rmdir(\/tmp\/oc_tmp_LfIb9L-folder): Directory not empty at \/home\/hchaased\/public_html\/omnidata\/lib\/private\/helper.php#361","level":3,"time":"2016-03-31T11:34:34+00:00"}
{"reqId":"Vv0Lc01CdSYAD3tu55wAAAAA","remoteAddr":"131.165.167.161","app":"PHP","message":"unlink(): No such file or directory at \/home\/hchaased\/public_html\/omnidata\/lib\/private\/helper.php#357","level":3,"time":"2016-03-31T11:35:15+00:00"}
{"reqId":"Vv0Lc01CdSYAD3tu55wAAAAA","remoteAddr":"131.165.167.161","app":"PHP","message":"rmdir(\/tmp\/oc_tmp_o9PDX3-folder\/news\/vendor\/bin): Directory not empty at \/home\/hchaased\/public_html\/omnidata\/lib\/private\/helper.php#355","level":3,"time":"2016-03-31T11:35:15+00:00"}
{"reqId":"Vv0Lc01CdSYAD3tu55wAAAAA","remoteAddr":"131.165.167.161","app":"PHP","message":"rmdir(\/tmp\/oc_tmp_o9PDX3-folder\/news\/vendor): Directory not empty at \/home\/hchaased\/public_html\/omnidata\/lib\/private\/helper.php#355","level":3,"time":"2016-03-31T11:35:15+00:00"}
{"reqId":"Vv0Lc01CdSYAD3tu55wAAAAA","remoteAddr":"131.165.167.161","app":"PHP","message":"rmdir(\/tmp\/oc_tmp_o9PDX3-folder\/news): Directory not empty at \/home\/hchaased\/public_html\/omnidata\/lib\/private\/helper.php#355","level":3,"time":"2016-03-31T11:35:15+00:00"}
{"reqId":"Vv0Lc01CdSYAD3tu55wAAAAA","remoteAddr":"131.165.167.161","app":"PHP","message":"rmdir(\/tmp\/oc_tmp_o9PDX3-folder): Directory not empty at \/home\/hchaased\/public_html\/omnidata\/lib\/private\/helper.php#361","level":3,"time":"2016-03-31T11:35:15+00:00"}
{"reqId":"Vv0Lek1CdSYAD32RCvUAAAAL","remoteAddr":"131.165.167.161","app":"PHP","message":"Array to string conversion at \/home\/hchaased\/public_html\/omnidata\/lib\/private\/template\/functions.php#36","level":3,"time":"2016-03-31T11:35:22+00:00"}
{"reqId":"Vv0Le01CdSYAD36gLN8AAAAc","remoteAddr":"131.165.167.161","app":"PHP","message":"unlink(): No such file or directory at \/home\/hchaased\/public_html\/omnidata\/lib\/private\/helper.php#357","level":3,"time":"2016-03-31T11:35:24+00:00"}
{"reqId":"Vv0Le01CdSYAD36gLN8AAAAc","remoteAddr":"131.165.167.161","app":"PHP","message":"rmdir(\/tmp\/oc_tmp_o9PDX3-folder\/news\/vendor\/bin): Directory not empty at \/home\/hchaased\/public_html\/omnidata\/lib\/private\/helper.php#355","level":3,"time":"2016-03-31T11:35:24+00:00"}
{"reqId":"Vv0Le01CdSYAD36gLN8AAAAc","remoteAddr":"131.165.167.161","app":"PHP","message":"rmdir(\/tmp\/oc_tmp_o9PDX3-folder\/news\/vendor): Directory not empty at \/home\/hchaased\/public_html\/omnidata\/lib\/private\/helper.php#355","level":3,"time":"2016-03-31T11:35:24+00:00"}
{"reqId":"Vv0Le01CdSYAD36gLN8AAAAc","remoteAddr":"131.165.167.161","app":"PHP","message":"rmdir(\/tmp\/oc_tmp_o9PDX3-folder\/news): Directory not empty at \/home\/hchaased\/public_html\/omnidata\/lib\/private\/helper.php#355","level":3,"time":"2016-03-31T11:35:24+00:00"}
{"reqId":"Vv0Le01CdSYAD36gLN8AAAAc","remoteAddr":"131.165.167.161","app":"PHP","message":"rmdir(\/tmp\/oc_tmp_o9PDX3-folder): Directory not empty at \/home\/hchaased\/public_html\/omnidata\/lib\/private\/helper.php#361","level":3,"time":"2016-03-31T11:35:24+00:00"}
{"reqId":"Vv0LoE1CdSYAD32RCv4AAAAL","remoteAddr":"131.165.167.161","app":"PHP","message":"unlink(): No such file or directory at \/home\/hchaased\/public_html\/omnidata\/lib\/private\/helper.php#357","level":3,"time":"2016-03-31T11:36:01+00:00"}
{"reqId":"Vv0LoE1CdSYAD32RCv4AAAAL","remoteAddr":"131.165.167.161","app":"PHP","message":"rmdir(\/tmp\/oc_tmp_o9PDX3-folder\/news\/vendor\/bin): Directory not empty at \/home\/hchaased\/public_html\/omnidata\/lib\/private\/helper.php#355","level":3,"time":"2016-03-31T11:36:01+00:00"}
{"reqId":"Vv0LoE1CdSYAD32RCv4AAAAL","remoteAddr":"131.165.167.161","app":"PHP","message":"rmdir(\/tmp\/oc_tmp_o9PDX3-folder\/news\/vendor): Directory not empty at \/home\/hchaased\/public_html\/omnidata\/lib\/private\/helper.php#355","level":3,"time":"2016-03-31T11:36:01+00:00"}
{"reqId":"Vv0LoE1CdSYAD32RCv4AAAAL","remoteAddr":"131.165.167.161","app":"PHP","message":"rmdir(\/tmp\/oc_tmp_o9PDX3-folder\/news): Directory not empty at \/home\/hchaased\/public_html\/omnidata\/lib\/private\/helper.php#355","level":3,"time":"2016-03-31T11:36:01+00:00"}
{"reqId":"Vv0LoE1CdSYAD32RCv4AAAAL","remoteAddr":"131.165.167.161","app":"PHP","message":"rmdir(\/tmp\/oc_tmp_o9PDX3-folder): Directory not empty at \/home\/hchaased\/public_html\/omnidata\/lib\/private\/helper.php#361","level":3,"time":"2016-03-31T11:36:01+00:00"}
{"reqId":"Vv0Lpk1CdSYAD37TtnMAAAAA","remoteAddr":"131.165.167.161","app":"PHP","message":"unlink(): No such file or directory at \/home\/hchaased\/public_html\/omnidata\/lib\/private\/helper.php#357","level":3,"time":"2016-03-31T11:36:06+00:00"}
{"reqId":"Vv0Lpk1CdSYAD37TtnMAAAAA","remoteAddr":"131.165.167.161","app":"PHP","message":"rmdir(\/tmp\/oc_tmp_o9PDX3-folder\/news\/vendor\/bin): Directory not empty at \/home\/hchaased\/public_html\/omnidata\/lib\/private\/helper.php#355","level":3,"time":"2016-03-31T11:36:06+00:00"}
{"reqId":"Vv0Lpk1CdSYAD37TtnMAAAAA","remoteAddr":"131.165.167.161","app":"PHP","message":"rmdir(\/tmp\/oc_tmp_o9PDX3-folder\/news\/vendor): Directory not empty at \/home\/hchaased\/public_html\/omnidata\/lib\/private\/helper.php#355","level":3,"time":"2016-03-31T11:36:06+00:00"}
{"reqId":"Vv0Lpk1CdSYAD37TtnMAAAAA","remoteAddr":"131.165.167.161","app":"PHP","message":"rmdir(\/tmp\/oc_tmp_o9PDX3-folder\/news): Directory not empty at \/home\/hchaased\/public_html\/omnidata\/lib\/private\/helper.php#355","level":3,"time":"2016-03-31T11:36:06+00:00"}
{"reqId":"Vv0Lpk1CdSYAD37TtnMAAAAA","remoteAddr":"131.165.167.161","app":"PHP","message":"rmdir(\/tmp\/oc_tmp_o9PDX3-folder): Directory not empty at \/home\/hchaased\/public_html\/omnidata\/lib\/private\/helper.php#361","level":3,"time":"2016-03-31T11:36:06+00:00"}
{"reqId":"Vv0LxE1CdSYAD3@iwFQAAAAk","remoteAddr":"131.165.167.161","app":"PHP","message":"unlink(): No such file or directory at \/home\/hchaased\/public_html\/omnidata\/lib\/private\/helper.php#357","level":3,"time":"2016-03-31T11:36:40+00:00"}
 [SHORTEND]
 not be found at \/usr\/bin\/clamscan","level":2,"time":"2016-08-08T13:13:05+00:00"}
{"reqId":"V6iGe01CdSYABXePqPYAAAAf","remoteAddr":"131.165.167.161","app":"no app in context","message":"OCA\\Files_Antivirus\\AvirWrapper OCA\\Files_Antivirus\\AvirWrapper::fopen The antivirus executable could not be found at \/usr\/bin\/clamscan","level":2,"time":"2016-08-08T13:17:48+00:00"}
{"reqId":"V6iGe01CdSYABXePqPYAAAAf","remoteAddr":"131.165.167.161","app":"no app in context","message":"OCA\\Files_Antivirus\\AvirWrapper OCA\\Files_Antivirus\\AvirWrapper::fopen The antivirus executable could not be found at \/usr\/bin\/clamscan","level":2,"time":"2016-08-08T13:17:48+00:00"}
{"reqId":"V6iHVk1CdSYABXqPFioAAAAE","remoteAddr":"131.165.167.161","app":"no app in context","message":"OCA\\Files_Antivirus\\AvirWrapper OCA\\Files_Antivirus\\AvirWrapper::fopen The antivirus executable could not be found at \/usr\/bin\/clamscan","level":2,"time":"2016-08-08T13:21:27+00:00"}
{"reqId":"V6iHVk1CdSYABXqPFioAAAAE","remoteAddr":"131.165.167.161","app":"no app in context","message":"OCA\\Files_Antivirus\\AvirWrapper OCA\\Files_Antivirus\\AvirWrapper::fopen The antivirus executable could not be found at \/usr\/bin\/clamscan","level":2,"time":"2016-08-08T13:21:27+00:00"}
{"reqId":"V6iHY01CdSYABXygQY8AAAAP","remoteAddr":"131.165.167.161","app":"no app in context","message":"OCA\\Files_Antivirus\\AvirWrapper OCA\\Files_Antivirus\\AvirWrapper::fopen The antivirus executable could not be found at \/usr\/bin\/clamscan","level":2,"time":"2016-08-08T13:21:40+00:00"}
{"reqId":"V6iHY01CdSYABXygQY8AAAAP","remoteAddr":"131.165.167.161","app":"no app in context","message":"OCA\\Files_Antivirus\\AvirWrapper OCA\\Files_Antivirus\\AvirWrapper::fopen The antivirus executable could not be found at \/usr\/bin\/clamscan","level":2,"time":"2016-08-08T13:21:40+00:00"}
{"reqId":"V6iIiU1CdSYABYPdjrkAAAAe","remoteAddr":"131.165.167.161","app":"no app in context","message":"OCA\\Files_Antivirus\\AvirWrapper OCA\\Files_Antivirus\\AvirWrapper::fopen The antivirus executable could not be found at \/usr\/bin\/clamscan","level":2,"time":"2016-08-08T13:26:34+00:00"}
{"reqId":"V6iIiU1CdSYABYPdjrkAAAAe","remoteAddr":"131.165.167.161","app":"no app in context","message":"OCA\\Files_Antivirus\\AvirWrapper OCA\\Files_Antivirus\\AvirWrapper::fopen The antivirus executable could not be found at \/usr\/bin\/clamscan","level":2,"time":"2016-08-08T13:26:34+00:00"}

Hi,

it seems you have somehow managed to break your PHP setup. If a .php file is downloaded instead "executed" you have a not working PHP environment. Some pointers:

Thanks for you reply.
Somehow the problem went away the next day. I may think that my webhotel must have done some stuff they didn't tell me about.

BTW.
some time after I got a internal server error message when trying to log on from web UI. It turned out I was low on disk space an after I deleted trash and version files I could log in again.