Invalid entries found. Please correct and submit again. Failed to add data.

Invalid entries found. Please correct and submit again. Failed to add data.

I have a form linked to paypal and when I try to run it through zoho dashboard or the code embed  I got " Invalid entries found. Please correct and submit again." then "Failed to add data."  I faced this issue today and I spent a lot of time try to fix.  I tried to create another form but I faced the same error.

I need help urgently.

I sent a support request already.