We have 2 NETGEAR M4300-48X (XSM4348CS) Switches connected as stacked in our production environment

We have 2 NETGEAR M4300-48X (XSM4348CS) switches in our production environment. The firmware version of switch is 12.0.17.9. There are multiple server connected to both switches and we have configured LAG inside switch ports to have redundant setup. Switch also have different VLANs for different data segmentation. Recently we had a issue that we were only able to access WAN VLAN (servers connected to WAN VLAN switch ports) but other VLANs were not accessible. So we believe switches was not properly working at that time. Finally when we have restarted both switches, it started working.

I have attached one Screenshot (Netgear_VLAN) in the ticket in which I have provided our switch network diagram.

We have configured Stacking between two NETGEAR switches one is management and another is stack member .The Management Switch Stack id is 15 and stack member id is 10. We have created six port as stack port & connected six RJ 45 LAN cables between both switches.

We have configured LAG inside switch ports to have redundant setup. LAG Configuration are same for firewall & server in switch.

I will provide you details about two different cases:-
1) Firewall Scenerio

We are using pfSense as firewall in our network and we have configured LACP in firewall side to achieve Reduntdant setup & in switch side we have setup LAG.
Firewall first NIC (eth0) cable is connected to SW01 Switch Port 46 which is in WAN VLAN.
Firewall second NIC (eth1) cable is connected to SW02 Switch Port 46 Which is in WAN VLAN.

Switch side we have created LAG between SW01 Port 46 & SW02 Port 46.
Firewall side we have created LACP (NIC Teaming) between eth0 and eth1

The result is we were able to access firewall servers during switch issue.

2) Server Scenerio
Server side we have configured NIC Teaming between 2 NICs. The Operating system of server side is TALOS.
Each Server we have 4 NICs, Example of one server which we have configured NIC Teaming like below:-

Server first NIC (eth0) cable is connected to SW01 Switch Port 01 which is in MGMT VLAN.
Server second NIC (eth1) cable is connected to SW02 Switch Port 01 Which is in MGMT VLAN.

Switch side we have created LAG between SW01 Port 01 & SW02 Port 01.
Server side we have created NIC Teaming between eth0 and eth1.

The result is we were not able to access servers during switch issue.

How we solved the issue?

We have solved the issue by pull out power cables from both the switches and plugin power cables, after that we could reach the servers.

We tried to find out logs from the switches but we could not get any logs.
We believe that we did something wrong configuration in our switch setup, so we want to verify our setup with NETGEAR technical person or someone who is using LAG and Stack configuration in production environment..

Can you please help us on this issue?

Thank you
Himanshu ved