Error no app in context

Hello! Enroll persistent errors in the. Can anyone met such.

Error no app in context Exception: {"Exception":"OCP\Lock\LockedException","Message":"\"\u041e\u041a\u041e\u0410\u0438\u041f\/\u0411\u044e\u0434\u0436\u0435\u0442 2017\/\u043c\u0430\u0439\/25.05.17 \u043e\u0436\u0438\u0434. \u043c\u0430\u0439\/\u0411\u044e\u0434\u0436\u0435\u0442 2017 \u043c\u0430\u0439 \u043e\u0436\u0438\u0434..xlsb\" is locked","Code":0,"Trace":"#0 \/var\/www\/html\/owncloud\/lib\/private\/files\/view.php(2003): OC\Files\View->lockPath('\/files\/\xD0\x9E\xD0\x9A\xD0\x9E\xD0\x90...', 1, false)\n#1 \/var\/www\/html\/owncloud\/lib\/private\/files\/view.php(842): OC\Files\View->lockFile('\/files\/\xD0\x9E\xD0\x9A\xD0\x9E\xD0\x90...', 1)\n#2 \/var\/www\/html\/owncloud\/apps\/files_versions\/lib\/storage.php(193): OC\Files\View->copy('files\/\/\xD0\x9E\xD0\x9A\xD0\x9E\xD0\x90...', 'files_versions\/...')\n#3 \/var\/www\/html\/owncloud\/apps\/files_versions\/lib\/hooks.php(60): OCA\Files_Versions\Storage::store('\/\xD0\x9E\xD0\x9A\xD0\x9E\xD0\x90\xD0\xB8\xD0\x9F\/\xD0...')\n#4 [internal function]: OCA\Files_Versions\Hooks::write_hook(Array)\n#5 \/var\/www\/html\/owncloud\/lib\/private\/hook.php(105): call_user_func(Array, Array)\n#6 \/var\/www\/html\/owncloud\/lib\/private\/filechunking.php(215): OC_Hook::emit('OC_Filesystem', 'write', Array)\n#7 \/var\/www\/html\/owncloud\/apps\/dav\/lib\/connector\/sabre\/file.php(436): OC_FileChunking->file_assemble(Object(OCA\Files_Trashbin\Storage), '\xD0\x91\xD1\x8E\xD0\xB4\xD0\xB6\xD0\xB5\xD1\x82 20...', '\/E71D2525-C733-...')\n#8 \/var\/www\/html\/owncloud\/apps\/dav\/lib\/connector\/sabre\/file.php(103): OCA\DAV\Connector\Sabre\File->createFileChunked(Resource id #47)\n#9 \/var\/www\/html\/owncloud\/apps\/dav\/lib\/connector\/sabre\/directory.php(134): OCA\DAV\Connector\Sabre\File->put(Resource id #47)\n#10 \/var\/www\/html\/owncloud\/3rdparty\/sabre\/dav\/lib\/DAV\/Server.php(1036): OCA\DAV\Connector\Sabre\Directory->createFile('\xD0\x91\xD1\x8E\xD0\xB4\xD0\xB6\xD0\xB5\xD1\x82 20...', Resource id #47)\n#11 \/var\/www\/html\/owncloud\/3rdparty\/sabre\/dav\/lib\/DAV\/CorePlugin.php(523): Sabre\DAV\Server->createFile('\xD0\x9E\xD0\x9A\xD0\x9E\xD0\x90\xD0\xB8\xD0\x9F\/\xD0\x91...', Resource id #47, NULL)\n#12 [internal function]: Sabre\DAV\CorePlugin->httpPut(Object(Sabre\HTTP\Request), Object(Sabre\HTTP\Response))\n#13 \/var\/www\/html\/owncloud\/3rdparty\/sabre\/event\/lib\/EventEmitterTrait.php(105): call_user_func_array(Array, Array)\n#14 \/var\/www\/html\/owncloud\/3rdparty\/sabre\/dav\/lib\/DAV\/Server.php(459): Sabre\Event\EventEmitter->emit('method:PUT', Array)\n#15 \/var\/www\/html\/owncloud\/3rdparty\/sabre\/dav\/lib\/DAV\/Server.php(248): Sabre\DAV\Server->invokeMethod(Object(Sabre\HTTP\Request), Object(Sabre\HTTP\Response))\n#16 \/var\/www\/html\/owncloud\/apps\/dav\/appinfo\/v1\/webdav.php(56): Sabre\DAV\Server->exec()\n#17 \/var\/www\/html\/owncloud\/remote.php(138): require_once('\/var\/www\/html\/o...')\n#18 {main}","File":"\/var\/www\/html\/owncloud\/lib\/private\/files\/view.php","Line":1905}

Server configuration
"user_ldap" 0.8.0
Operating system: Ubuntu Server 15.10
Web server:Apache/2.4.12
Database:mariaDB 10.0.25
PHP version:PHP 5.6.11
ownCloud version (see ownCloud admin page): ownCloud 9.0.9 (stable)
Updated from an older ownCloud or fresh install:
Special configuration (external storage - nas, external authentication- ldap, reverse proxy - no, server-side-encryption-no):