Error after the update

Hello,
After yesterday’s website update, I am getting the following error

The website encountered an unexpected error. Please try again later.

Drupal\entity_print\PrintEngineException : Missing dependencies. Please install with: composer require "dompdf/dompdf 0.8.0" in Drupal\entity_print\Plugin\EntityPrintPluginManager->createInstance() (line 87 of /drupal/sites/event-atlas-week.web.cern.ch/modules/entity_print/src/Plugin/EntityPrintPluginManager.php ).

Could you please advise how to install these missing dependencies?

Kind regards,
Lina

Dear Lina,

The only way to fix this is to restore from a previous backup (yourwebsite/_site/backups/) before the update.

Your website was using some local modules for entity print and PDF libraries that were customised in order to work in the current infra.

By updating these modules you overwritten the custom code.