By the looks of it something is generating too many ticks but I have no clue as to what it could be. I'm always getting "Can't keep up! Is the server overloaded? Running Xms or X ticks behind" and "(Username) moved too quickly!" messages to the point where its unplayable.
Crash Report - https://drive.google.com/file/d/1mt1CC35y5huPSbHshkD-PP0I0eqCS6VA/view?usp=sharing
Debug - https://drive.google.com/file/d/1XX6ZwZhsOdnI_UORHFu6B8Rzjxfpbfmv/view?usp=sharing
Latest - https://drive.google.com/file/d/1ygIX9UCkHzZJ9Ja0CpleC6DFgSpRMvOv/view?usp=sharing
Got it, I just ran the server again and here is the new crash report - https://pastebin.com/9D7Zbv1d
Along with the latest and debug logs - latest (https://drive.google.com/file/d/1ygIX9UCkHzZJ9Ja0CpleC6DFgSpRMvOv/view?usp=sharing), Debug (https://drive.google.com/file/d/1XX6ZwZhsOdnI_UORHFu6B8Rzjxfpbfmv/view?usp=sharing)