Events and Logs

I see only informative messages in the event logs but no error issues or diagnostic messages.
Say I not able to connect to the hub or getting some 500 status error from the hub.These error messages are not showing up in the event logs. Do I need to turn on a flag or enable a flag to see these ? Or these will never show up?

They wont show in event logs. Check out live logging in the IDE

Nothing shows up in the live logging in the IDE.