FreePBX 17 New install after restoring from FreePBX 15 full backup

Update all your modules and then re-restore your backup - it looks like several settings got missed in the restore - Make sure to update Core specifically - the one on the ISO is broken for restores.

Similar to this: Restore to FreePBX 17 is broken again…Here is a Workaround - FreePBX / Installation / Upgrade - FreePBX Community Forums