Hey @techypradu,
Thanks for taking the time to leave your feedback and I apologize for the trouble you’re running into here!
In most cases, we typically see this issue when one or more of the files in the WPForms plugin is corrupt or missing. Most of the time this issue can be resolved by deactivating and deleting the WPForms plugin on your site then uploading a fresh version of the plugin.
In case it helps, WPBeginner also has a great guide on how to resolve critical errors here. In that article, it mentions that when a critical error occurs an email is sent to the site administrator. This email will contain more details about the specific cause of the critical error on your site.
And if you need any further assistance then please feel welcome to reach out to our team on the support forum here.
Thanks!
