The tag ‘amp-iframe’ is missing a mandatory attribute – pick one of [‘src’, ‘src

Hi @roytranedt,

Will you please tell me how you are adding this form in the non-amp version – https://monosnap.com/file/qiiwxbo9qggYBQ0ZoLgj7cdFO0aJrE?

and in this form, you are using the iframe and the src is showing blank in your non-amp version and due to that in AMP, you are having errors – https://monosnap.com/file/NVyuaRMvzbTt5CiWGBDrOVCiPZrNs6?

Will you please check and let us know

We are making the forms through Gravity Forms plugin, which is then called via short code by calling the form’s ID.
For the blank source, I am not sure if thats default by gravity forms but on this page
https://catertrax.com/book-demo-homepage-video/
the source is blank as well but didn’t return an error in the amp error scan. If this was a problem wouldn’t this occur in many more places?

This page – https://catertrax.com/book-demo-homepage-video/ is also having the error – https://search.google.com/test/amp?id=3l56_G_PxUriiUk2ioeLZQ and please try to add something in the iframe in your non-amp version so that it doesn’t have errors in AMP