Admin panel doesn't work

[bakek]

After changing database password at my hosting provider and changing the password at /app/config/parameters.php my admin pannel stopped working ( HTTP ERROR 500).

 

Other parts of the installation seems to work properly. I tried to turn debugging mode on (define('_PS_MODE_DEV_', true) and I was able to login, but after turning it off again I am unable to login again.

Can anybody help me?

[prestamodulo]

Did you see any error while debug mode is on ?

You can check your server error log file to find out the exact issue database password is not the issue for sure.

[bakek]

Currently I don't have an access to error log file. I'm not sure If It's possible with my server provider.

After logging in with debug mode on and going to log messages I've got something like this:

[prestamodulo]

It does not give any clue. can you check if there is something in debug tab ?

If you are on shared hosting it may be on your website root folder.

[bakek]

10 minutes ago, prestamodulo said:

If you are on shared hosting it may be on your website root folder.

Do You have an idea what could be the name of the file?

 

11 minutes ago, prestamodulo said:

It does not give any clue. can you check if there is something in debug tab ?

 

[prestamodulo]

2 minutes ago, bakek said:

Do You have an idea what could be the name of the file?

yes it should be always 

Quote

error.log

 

[bakek]

There is no file like that unfortunately. Isn't it possible to do something without that file?

[prestamodulo]

What is your Prestashop and Php version ?

[bakek]

I Think Prestashop 1.7.5.2 and Php 5.6.

[Mohamadou Ndiaye]

Try to delete those cache's directories "dev" and "prod" .

Those directories are located here : var/cache/dev and var/cache/prod

Note: For better performance and compatibility it's recommended to use PHP 7.1 or later for  PrestaShop 1.7

[bakek]

It seems to work properly after deleting that directories mentioned before.

If something went wrong in the future I'll let you know, but for now it looks like a solution for the problem.

[Mohamadou Ndiaye]

Great happy to hear that

Don't forget to set the topic as solved.

Thanks

[Stella_Geo]

In my experience, I can't login to admin area while on debug mode.
So I need to turn it off from defines.inc.php
It might be a bug, but I hope someone find it usefull

Edited December 7, 2022 by Stella_Geo (see edit history)

[rahat]

I am having the same issue

Warning: include(/home1/b/public_html/b/vendor/composer/../symfony/symfony/src/Symfony/Component/Debug/Debug.php): failed to open stream: No such file or directory in /home1/b/public_html/belle/vendor/composer/ClassLoader.php on line 440

Warning: include(/home1/b/public_html/belle/vendor/composer/../symfony/symfony/src/Symfony/Component/Debug/Debug.php): failed to open stream: No such file or directory in /home1/b/public_html/belle/vendor/composer/ClassLoader.php on line 440

Warning: include(): Failed opening '/home1/b/public_html/belle/vendor/composer/../symfony/symfony/src/Symfony/Component/Debug/Debug.php' for inclusion (include_path='/home1/b/public_html/belle/tools/htmlpurifier/standalone:/home1/b/public_html/belle/vendor/pear/pear_exception:/home1/b/public_html/belle/vendor/pear/console_getopt:/home1/b/public_html/belle/vendor/pear/pear-core-minimal/src:/home1/b/public_html/belle/vendor/pear/archive_tar:.:/opt/cpanel/ea-php70/root/usr/share/pear') in /home1/b/public_html/belle/vendor/composer/ClassLoader.php on line 440

Fatal error: Uncaught Error: Class 'Symfony\Component\Debug\Debug' not found in /home1/b/public_html/belle/admin790bmkd4t/index.php:75 Stack trace: #0 {main} thrown in /home1/b/public_html/belle/admin790bmkd4t/index.php on line 75