@Selanty
I have the same problem, fresh installed Fog on Debain 12, PHP 8.2.29, Fog 1.5.10.1667.
Fog-Server is running on the same switch as the 2 Clients in one VLAN 2765. For that VLAN ip igmp is enabled.
“sh ip igmp” on that aruba switch shows:
-IGMP version : 2
-Querier Address : 10.73.65.21 (vlan-address of a second switch witch plays as querier)
-the querier ist running igmp v2

“service FOGMulticastManager status” result is:
PHP Fatal error: Uncaught Error: Non-static method FOGService::outall() cannot be called statically in /opt/fog/service/FOGMulticastManager/FOG>

unicast to that 2 clients is running.