After update 2.31.04 there is error with FreePBX queues synchronization:
[root@ats2 etc]# /usr/bin/php -f /var/www/html/fop2/admin/update_conf.php
PHP Fatal error: Call to a member function connect() on a non-object in /var/www/html/fop2/admin/functions-freepbx.php on line 444

Test is going OK:
[root@ats2 log]# /usr/local/fop2/fop2_server --test
Flash Operator Panel 2 - Valid License
Flash Operator Panel 2 - Featureset: Basic
Flash Operator Panel 2 - Allowed Tenants: 5

Connection to manager OK!

FOP2 and FreePBX on different servers. How to synchronize queues?