UE disconnecting after a week and not reconnecting with the same SIM

[Gabi2203]

I have tried to set up "srsRAN gNB with COTS UEs". Followed the instructions and managed to connect my UE without any issue.

After about a week it just disconnected and never reconnected. During the troubleshooting I exchanged the SIM with a new one and UE connected without issue.

After another week same issue UE is not connecting anymore, there is no indication of it even attempting any step of the connection(i am attaching gnb.log)

gnb.log

There were no changes made to neither of the configuration files or to the Open5GS core configs, between it working and it not working.

I have to mention that I have two separate instances running this on two different test benches running the same config in adiacent rooms. And they both had the same behavior. And for both changing the SIM card seemed to fix the issue.

USRP: Ettus Research B200
UE: Nokia FastMile 5G Receiver 5G26-A
SIM: SysmoISIM-SJA5
MCC=001
MNC=01

Not configured in roaming scenario.

I have tried to delete and re-add the same SIM to the core, have tried rebooting all the pieces of the system. None seemed to have any effect.Please let me know if I can provide any extra information that would be helpful in this case.