Thanks for looking into it, but your function is what produces the error, it cannot be used in this form.

Best regards,
TBM

Hey Rikard,
Thank you for your help, your code fix the problem.

Best regards,
TBM

#edit
I get an error when I want to save a post.
“Update failed. The response is not a valid JSON response.”
even if you want to edit the functions.php you get an error.

• This reply was modified 4 years, 6 months ago by TBM.

Unfortunately without success.
Can you take another look at the problem?
Thank you