That fixed it, thanks.
Now my other issue:
A few of the FreePBX modules seem to be broken. "Blacklist, Announcements, Extension Module, Misc Applications, Parking, Text to Speech, Incoming Routes and Voicemail Admin".
When I click on these modules, I get below error on the GUI.
It fails to read entries in voicemail.conf:
Also, I don't know if it is relevant, but Sysadmin module says, that I am still on FreePBX 12.