HELP! FO error after upgrade 1.7.8.8 to 8.2.1

[spitfire00]

Upgrade without no errors all fine via Upgrade Assistance (automatic).

BO is ok, can access and all is good.

FO: error:

Fatal error: Uncaught PrestaShop\PrestaShop\Core\Exception\ContainerNotFoundException: Kernel Container is not available in /home/picanty/www/src/Adapter/ContainerFinder.php:77 Stack trace: #0 /home/picanty/www/classes/module/Module.php(1702): PrestaShop\PrestaShop\Adapter\ContainerFinder->getContainer() #1 /home/picanty/www/classes/module/Module.php(1691): ModuleCore::getModuleRepository() #2 /home/picanty/www/classes/Hook.php(884): ModuleCore::getNativeModuleList() #3 /home/picanty/www/classes/Dispatcher.php(351): HookCore::exec('actionDispatche...', Array) #4 /home/picanty/www/index.php(28): DispatcherCore->dispatch() #5 {main} thrown in /home/picanty/www/src/Adapter/ContainerFinder.php on line 77

Can you please help me what can I do?

Already empty cache folders.

[Prestashop Addict]

This becomes certainly from a module. Try to find out which one, and ask developer to fix. It's generally a front controller initialization issue, or kernel initialization.