Internal Server Error after Upgrading to 9.1.2.5 from 9.1.1.3

Please help us by providing the following info.
After Upgrading to 9.1.2.5 from 9.1.1.3 - Internal Server Error

Steps to reproduce
1. yum update
2. run ./occ upgrade (seemed to run OK)
3. Log in and access to files and app appeared normal.
4. After computer reboot the errors surfaced

Expected behaviour
Normal log in with access to files and apps

Actual behaviour
*** Attempting to Login
Internal Server Error
The server encountered an internal error and was unable to complete your request.
Please contact the server administrator if this error reappears multiple times, please include the technical details below in your report.
More details can be found in the server log.
Technical details
Remote Address: 192.168.10.254
Request ID: WDjxi96PwM011CKDgf7aiQAAAAI

*** Attempt to run ./occ (anything) as user apache
-bash-4.2$ ./occ
An unhandled exception has been thrown:
OCP\AutoloadNotAllowedException: Autoload path not allowed: /var/www/html/owncloud/apps/gallery/appinfo/application.php in /var/www/html/owncloud/lib/autoloader.php:133
Stack trace:

0 /var/www/html/owncloud/lib/autoloader.php(157): OC\Autoloader->isValidPath('/var/www/html/o...')

1 [internal function]: OC\Autoloader->load('OCA\Gallery\App...')

2 /var/www/html/owncloud/apps/_gallery/appinfo/app.php(19): spl_autoload_call('OCA\Gallery\App...')

3 /var/www/html/owncloud/lib/private/legacy/app.php(187): require_once('/var/www/html/o...')

4 /var/www/html/owncloud/lib/private/legacy/app.php(150): OC_App::requireAppFile('_gallery')

5 /var/www/html/owncloud/lib/private/legacy/app.php(120): OC_App::loadApp('_gallery')

6 /var/www/html/owncloud/lib/private/Console/Application.php(95): OC_App::loadApps()

7 /var/www/html/owncloud/console.php(101): OC\Console\Application->loadCommands(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))

8 /var/www/html/owncloud/occ(11): require_once('/var/www/html/o...')

9 {main}-bash-4.2$

-bash-4.2$

Server configuration
Operating system: CentOS 7.2.1511
Web server: Apache 2.4.6
Database: mysql
PHP version: 7.0.12
ownCloud version (see ownCloud admin page): 9.1.2.5 (unable to access GUI)
Updated from an older ownCloud or fresh install: Updated via terminal ./occ upgrade
Special configuration (external storage, external authentication, reverse proxy, server-side-encryption):
Several external storage shares, few apps: calendar, activity, comments, gallery No Encryption, No https

ownCloud log (data/owncloud.log)

\/kVJT++D9Yaria","remoteAddr":"","app":"core","message":"starting upgrade from 9.1.1.3 to 9.1.2.5","level":0,"time":"2016-11-25T05:51:39+00:00","method":"--","url":"--","user":"--"}
{"reqId":"g2Mas0\/kVJT++D9Yaria","remoteAddr":"","app":"PHP","message":"file_put_contents(\/var\/www\/html\/owncloud\/data\/.htaccess): failed to open stream: Permission denied at \/var\/www\/html\/owncloud\/lib\/private\/Setup.php#500","level":3,"time":"2016-11-25T05:51:39+00:00","method":"--","url":"--","user":"--"}
{"reqId":"WDfYlXbhS-TqUWZkUZIrvwAAAAQ","remoteAddr":"192.168.10.254","app":"index","message":"Exception: {\"Exception\":\"OCP\\\\AutoloadNotAllowedException\",\"Message\":\"Autoload path not allowed: \\\/var\\\/www\\\/html\\\/owncloud\\\/apps\\\/gallery\\\/appinfo\\\/application.php\",\"Code\":0,\"Trace\":\"#0 \\\/var\\\/www\\\/html\\\/owncloud\\\/lib\\\/autoloader.php(157): OC\\\\Autoloader->isValidPath('\\\/var\\\/www\\\/html\\\/o...')\\n#1 [internal function]: OC\\\\Autoloader->load('OCA\\\\\\\\Gallery\\\\\\\\App...')\\n#2 \\\/var\\\/www\\\/html\\\/owncloud\\\/apps\\\/_gallery\\\/appinfo\\\/app.php(19): spl_autoload_call('OCA\\\\\\\\Gallery\\\\\\\\App...')\\n#3 \\\/var\\\/www\\\/html\\\/owncloud\\\/lib\\\/private\\\/legacy\\\/app.php(187): require_once('\\\/var\\\/www\\\/html\\\/o...')\\n#4 \\\/var\\\/www\\\/html\\\/owncloud\\\/lib\\\/private\\\/legacy\\\/app.php(150): OC_App::requireAppFile('_gallery')\\n#5 \\\/var\\\/www\\\/html\\\/owncloud\\\/lib\\\/private\\\/legacy\\\/app.php(120): OC_App::loadApp('_gallery')\\n#6 \\\/var\\\/www\\\/html\\\/owncloud\\\/lib\\\/base.php(887): OC_App::loadApps()\\n#7 \\\/var\\\/www\\\/html\\\/owncloud\\\/index.php(54): OC::handleRequest()\\n#8 {main}\",\"File\":\"\\\/var\\\/www\\\/html\\\/owncloud\\\/lib\\\/autoloader.php\",\"Line\":133}","level":3,"time":"2016-11-25T06:22:13+00:00","method":"GET","url":"\/owncloud\/","user":"--"}
{"reqId":"WDfYvLqGi-

Integrity status for oC9+

Unable to access GUI

Please report such issues during an update directly to https://github.com/owncloud/core/issues

Ref: