Illegal string offset 'name' when attempting to install Directory module ver 13.0.10

When attempting to install Directory module through Module Admin GUI, receive PHP error:

[Whoops\Exception\ErrorException] Illegal string offset ‘name’

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?

You have invalid data in your /etc/asterisk/voicemail.conf file

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: