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ContainerBuilder not found


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I've recently encountered an issue after installing a new package with composer in my PrestaShop project.

Now, when I want to access my back office, this message appears on the screen


Fatal error: Uncaught Error: Class 'PrestaShop\PrestaShop\Core\ContainerBuilder' not found in /var/www/preprod17/config/bootstrap.php on line 34

Error: Class 'PrestaShop\PrestaShop\Core\ContainerBuilder' not found in /var/www/preprod17/config/bootstrap.php on line 34

The file exists inside the src/Core folder. Even if I remove the package, delete the cache folder, it keeps display this error message.

If someone could help me it would be great !


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