Not proficient in PHP, perhaps this is a simple solution (array vs string?). To resolve issue, do I modify line 121 in /var/www/html/admin/modules/directory/install.php?
Cheers
Thank you Andrew. I found the invalid data and the module is now loaded.
However, secondary problem now. I get a fast busy whenever trying to access the directory, whether from IVR or an inbound route. Attached is test call from DID 6042148511: