Hi Jan,
For clarification, you mentioned that authors are not allowed to support their customers on these forums. What kind of information can we post in these support forums?
I am new to using these.
Quick follow-up. On one site that I implemented the fix above, errors went from around 300 to almost zero and AMP pages indexed went from about 100 to almost 400!
Yes, Thank you taniav!
I implemented your solution this morning. It instantly fixed my “Unknown syntax error” problem when I checked the developer console using the testing URL (#development=1) and Google’s Structured Data Testing Tool.
I am going to check on this regularly over the next couple of weeks.
Thanks again!!