Plugin could not be activated because it triggered a fatal error.

Hello there,
The Plugin Is Awesome, But while extending the compatibility of gravity form with nested form to crate repeatable form the error occur while submitting nested child form
“There was a problem with your submission. Errors have been highlighted below.”
While finding the conflicted its due to Paytm plugin, after disabling Paytm plugin it works fine.
please try to find the code which makes conflict thanks.

My form is not Redirecting to payments page after submition help me.