Hi Milos, thank you for your guidance.
I have now tested for a plugin conflict as suggested.
I temporarily disabled Starter Templates and all other non-essential plugins. Elementor 4.3.4 was inactive at this point and the website loaded successfully, although the layout was broken.
I then activated Elementor while the other plugins remained inactive. The website immediately returned the same Critical Error.
I disabled Elementor again by renaming its folder, and the website became accessible again.
Therefore, the error still occurs even without the other Elementor-related plugins/add-ons active.
Before I make any changes to the database or Elementor data, could you please guide me on the safest way to identify which Elementor page, template, Default Kit, or JSON data contains the corrupted/missing widgetType entry?
I would like to preserve all existing Elementor designs and data and avoid deleting or modifying anything unnecessarily.
Thank you.
