Error on installing OwnCloud 10.0.6

[Mephysto666]

Steps to reproduce

1. Go to Owncloud homepage

Expected behaviour

Showing admin user creation screen

Actual behaviour

Server configuration

Operating system: Debian 9.1

Web server: Same behavior both with Apache 2.4 and Nginx 1.10.3

Database: Postgres

PHP version: 7.0.27-0+deb9u1

ownCloud version: 10.0.6

Updated from an older ownCloud or fresh install: Fresh install

Where did you install ownCloud from: Manual installation

Signing status (ownCloud 9.0 and above):

Login as admin user into your ownCloud and access 
http://example.com/index.php/settings/integrity/failed 
paste the results into https://gist.github.com/ and puth the link here.

The content of config/config.php:
I can't produce config, I get this error:

Error: Call to a member function getUser() on null in /var/www/html/lib/private/Log.php:295
Stack trace:
#0 /var/www/html/lib/public/Util.php(157): OC\Log->log(3, 'User backend OC...', Array)
#1 /var/www/html/lib/private/legacy/user.php(153): OCP\Util::writeLog('core', 'User backend OC...', 3)
#2 /var/www/html/lib/base.php(657): OC_User::setupBackends()
#3 /var/www/html/lib/base.php(998): OC::init()
#4 /var/www/html/console.php(64): require_once('/var/www/html/l...')
#5 /var/www/html/occ(11): require_once('/var/www/html/c...')

List of activated apps: I can't produce it.

**Are you using external storage, if yes which one:**  nfs

**Are you using encryption:** no

**Are you using an external user-backend, if yes which one:** ActiveDirectory

#### LDAP configuration (delete this part if not used)
Not configured yet

### Client configuration
**Browser:** Firefox 58

**Operating system:** Windows 10

### Logs
#### Web server error log

2018/02/08 09:21:48 [error] 2071#2071: *47 FastCGI sent in stderr: "PHP message: PHP Warning: hash_equals(): Expected user_string to be a string, null given in /var/www/html/lib/private/Log.php on line 287
PHP message: {"reqId":"ALy7R2TQii6lmIJXRLoS","level":3,"time":"February 08, 2018 09:21:48","remoteAddr":"10.39.0.77","user":"--","app":"index","method":"GET","url":"/index.php","message":"Exception: {"Exception":"Error","Message":"Call to a member function getUser() on null","Code":0,"Trace":"#0 \/var\/www\/html\/lib\/private\/Log.php(169): OC\\Log->log(3, 'session_name():...', Array)\n#1 \/var\/www\/html\/lib\/private\/Log\/ErrorHandler.php(89): OC\\Log->error('session_name():...', Array)\n#2 [internal function]: OC\\Log\\ErrorHandler::onError(2, 'session_name():...', '\/var\/www\/html\/l...', 45, Array)\n#3 \/var\/www\/html\/lib\/private\/Session\/Internal.php(45): session_name('')\n#4 \/var\/www\/html\/lib\/base.php(426): OC\\Session\\Internal->__construct('')\n#5 \/var\/www\/html\/lib\/base.php(582): OC::initSession()\n#6 \/var\/www\/html\/lib\/base.php(998): OC::init()\n#7 \/var\/www\/" while reading response header from upstream, client: 10.39.0.77, server: _, request: "GET /index.php HTTP/1.1", upstream: "fastcgi://unix:/run/php/php7.0-fpm.sock:", host: "10.39.0.222", referrer: "http://10.39.0.222/"
2018/02/08 09:21:48 [error] 2071#2071: *47 FastCGI sent in stderr: "PHP message: {"reqId":"ALy7R2TQii6lmIJXRLoS","level":3,"time":"February 08, 2018 09:21:48","remoteAddr":"10.39.0.77","user":"--","app":"PHP","method":"GET","url":"/index.php","message":"hash_equals(): Expected user_string to be a string, null given at /var/www/html/lib/private/Log.php#287"}" while reading upstream, client: 10.39.0.77, server: _, request: "GET /index.php HTTP/1.1", upstream: "fastcgi://unix:/run/php/php7.0-fpm.sock:", host: "10.39.0.222", referrer: "http://10.39.0.222/"
2018/02/08 09:38:09 [error] 8929#8929: *1 FastCGI sent in stderr: "PHP message: PHP Warning: hash_equals(): Expected user_string to be a string, null given in /var/www/html/lib/private/Log.php on line 287" while reading response header from upstream, client: 10.39.0.77, server: _, request: "GET /index.php HTTP/1.1", upstream: "fastcgi://unix:/run/php/php7.0-fpm.sock:", host: "10.39.0.222"

#### ownCloud log (data/owncloud.log)

{"reqId":"6rJMyma4TOKNickeBMbB","level":3,"time":"February 08, 2018 10:00:34","remoteAddr":"10.39.0.77","user":"--","app":"index","method":"GET","url":"/index.php","message":"Exception: {"Exception":"Error","Message":"Call to a member function getUser() on null","Code":0,"Trace":"#0 \/var\/www\/html\/lib\/private\/Log.php(169): OC\\Log->log(3, 'session_name():...', Array)\n#1 \/var\/www\/html\/lib\/private\/Log\/ErrorHandler.php(89): OC\\Log->error('session_name():...', Array)\n#2 [internal function]: OC\\Log\\ErrorHandler::onError(2, 'session_name():...', '\/var\/www\/html\/l...', 45, Array)\n#3 \/var\/www\/html\/lib\/private\/Session\/Internal.php(45): session_name('')\n#4 \/var\/www\/html\/lib\/base.php(426): OC\\Session\\Internal->__construct('')\n#5 \/var\/www\/html\/lib\/base.php(582): OC::initSession()\n#6 \/var\/www\/html\/lib\/base.php(998): OC::init()\n#7 \/var\/www\/html\/index.php(54): require_once('\/var\/www\/html\/l...')\n#8 {main}","File":"\/var\/www\/html\/lib\/private\/Log.php","Line":295}"}
{"reqId":"6rJMyma4TOKNickeBMbB","level":3,"time":"February 08, 2018 10:00:34","remoteAddr":"10.39.0.77","user":"--","app":"PHP","method":"GET","url":"/index.php","message":"hash_equals(): Expected user_string to be a string, null given at /var/www/html/lib/private/Log.php#287"}

#### Browser log

Error: Call to a member function getUser() on null in /var/www/html/lib/private/Log.php:295 Stack trace: #0 /var/www/html/lib/private/Log.php(169): OC\Log->log(3, 'session_name():...', Array) #1 /var/www/html/lib/private/Log/ErrorHandler.php(89): OC\Log->error('session_name():...', Array) #2 [internal function]: OC\Log\ErrorHandler::onError(2, 'session_name():...', '/var/www/html/l...', 45, Array) #3 /var/www/html/lib/private/Session/Internal.php(45): session_name('') #4 /var/www/html/lib/base.php(426): OC\Session\Internal->__construct('') #5 /var/www/html/lib/base.php(582): OC::initSession() #6 /var/www/html/lib/base.php(998): OC::init() #7 /var/www/html/index.php(54): require_once('/var/www/html/l...') #8 {main}

Can you help me please?

Meph

[PVince81]

Thanks for your report.

Closing in favor of #30335 which apparently has the same cause

[PVince81]

seems to be slightly different code.

@sharidas please have a look

[PVince81]

@Mephysto666 did you set any conditional log settings in config.php or was this a plain unmodified install ?

[Mephysto666]

HI @PVince81,
no, I did not touch no log settings.

Bye.

Meph

[VicDeo]

@Mephysto666
according to the log it can't find or load a file with a class that is responsible for user management.

Could you please

1. Double check ownership/permissions
2. share an output for php occ integrity:check-core

[Mephysto666]

Hi @VicDeo,
all files and directories belong to www-data, user and group. Same user and group as nginx and php-fpm processes.

The output of command you suggested is this:

www-data@ftp:~/html$ php occ integrity:check-core
An unhandled exception has been thrown:
Error: Call to a member function getUser() on null in /var/www/html/lib/private/Log.php:295
Stack trace:
#0 /var/www/html/lib/public/Util.php(157): OC\Log->log(3, 'User backend OC...', Array)
#1 /var/www/html/lib/private/legacy/user.php(153): OCP\Util::writeLog('core', 'User backend OC...', 3)
#2 /var/www/html/lib/base.php(657): OC_User::setupBackends()
#3 /var/www/html/lib/base.php(998): OC::init()
#4 /var/www/html/console.php(64): require_once('/var/www/html/l...')
#5 /var/www/html/occ(11): require_once('/var/www/html/c...')
#6 {main}

Same error as before.

Many thanks.

Meph

[VicDeo]

@Mephysto666 could you check what will happen when you replace
/var/www/html/lib/private/Log.php with
https://github.com/owncloud/core/raw/2c449a1dce649da1a4d22cbfbcfbc0c2118cad8b/lib/private/Log.php ?

I suspect there is something wrong with PHP session configuration so logger fails to get a user.
Your owncloud.log might have a clue inside after this patch

[PVince81]

@Mephysto666 please try with OC 10.0.7 RC2: https://download.owncloud.org/community/testing/owncloud-10.0.7RC2.tar.bz2

[Mephysto666]

I can't test it now, but the problem is in config.php of downloaded version of Owncloud.

I used web installation that has a more simple config.php and it had been installed without problems. When I tried to use config.php I used in preceding installation, I econuntered same error.

I hope this is useful for you.

Best regards.

Meph

[VicDeo]

The reason can only be guessed in that case.
I'd suppose that something is wrong with cache setup (Redis or whatever) on your environment.

[PVince81]

please reopen if problem persists with 10.0.7 which contains a fix for null errors

[lock]

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.