Unknown error. How to check lua errors on dedicated server.

Hello. Today i got dedicated server, but i can't normal play. I suppose that the problem in lua script, but i can't check errors in game. This problem only on dedicated server.

And panorama has a real lags. For example in test version i create a repeat timer (schedule) in 0.005sec, and he don't has lags, but on dedicated server game(client) has a real lags.