Radius server not responding

I am experiencing an issue with my radius server not responding. I'm not sure if there is a specific error code, but I haven't made any recent changes to the server that could be causing this issue. I need help in diagnosing and resolving this issue quickly so I can get back to normal operations.
2FA google authenticator install kerwana hai

Issue is I'm getting stuck on radtest.... which is basically radius server not responding.

Fixing errors in linux serve and installing 2fa