this can have several reasons, usually it is the email client.
Please have a look here:
here:
and here:
https://privacyidea.readthedocs.io/en/v3.5/policies/authentication.html#emailtext
You might also need to check the rest of the configuration of your event handler (conditions and general settings)!
The {googleurl_img}
is “None”, which looks suspecious.