Server cant keep up

22.06 08:17:37 [Server] Server thread/WARN Can't keep up! Did the system time change, or is the server overloaded? Running 5586ms behind, skipping 111 tick(s) 22.06 08:17:56 [Server] Server thread/WARN Can't keep up! Did the system time change, or is the server overloaded? Running 7057ms behind, skipping 141 tick(s) 22.06 08:18:20 [Server] Server thread/WARN Can't keep up! Did the system time change, or is the server overloaded? Running 11600ms behind, skipping 232 tick(s) 22.06 08:18:33 [Server] Server thread/WARN Can't keep up! Did the system time change, or is the server overloaded? Running 5697ms behind, skipping 113 tick(s) 22.06 08:18:54 [Server] Server thread/WARN Can't keep up! Did the system time change, or is the server overloaded? Running 8255ms behind, skipping 165 tick(s)

its goes crazy when ever a player is online which litterally makes the server unplayable.

its does not have something to do with the server nor the host as we have looked at everything and concluded that it wasnt something to do with the server nor host

please fix this

edit: I have added 3 files which is one of the crashes, debug and logs