Error 500 after Upgrade

[Pat]

Hi,

we have tried to upgrade our PrestaShop in test from 1.7.1.1 to 1.7.3.0 using  the upgrade module.

After that the site doesn't work anymore, it displays error 500.

We have set the debug mode and we see this:

Warning: include(/var/www/html/sito/vendor/composer/../../src/Adapter/SymfonyContainer.php): failed to open stream: No such file or directory in /var/www/html/sito/vendor/composer/ClassLoader.php on line 444 Warning: include(): Failed opening '/var/www/html/sito/vendor/composer/../../src/Adapter/SymfonyContainer.php' for inclusion (include_path='/var/www/html/sito/tools/htmlpurifier/standalone:/var/www/html/sito/vendor/pear/pear_exception:/var/www/html/sito/vendor/pear/console_getopt:/var/www/html/sito/vendor/pear/pear-core-minimal/src:/var/www/html/sito/vendor/pear/archive_tar:.:/usr/share/pear/') in /var/www/html/sito/vendor/composer/ClassLoader.php on line 444

Fatal error: Class 'PrestaShop\PrestaShop\Adapter\SymfonyContainer' not found in /var/www/html/sito/classes/Hook.php on line 937

Wher we can manage that?

Thank you

 

 

 

 

 

Edited April 5, 2018 by Pat (see edit history)

[jetx]

if you delete the folders inside of app/cache see if it fixes it.

 

Note: just noticed this was over a week ago, so expect you fixed it. shows how often I visit this forum.

Edited April 16, 2018 by jetx (see edit history)

[pietpetoors]

Still no solution for this? I also get this error.