Hello,
Thank you for reaching out with the details of the issue you’re experiencing. It seems like there might be a conflict causing the critical error on your website.
Please follow these steps to help identify the source of the problem:
1. Deactivate all plugins except for Formidable Forms.
2. Switch to a default WordPress theme, like Twenty Twenty-One.
3. Check if the issue persists.
If the problem is resolved after following these steps, reactivate your plugins and theme one by one to pinpoint the conflict and test between each activation. When the issue returns, the last thing activated is the source of your issue.
If you have any questions or concerns, please don’t hesitate to ask.
Best regards,
Nathanael