hmmm
[15:05:52] [Server thread/WARN]: Can't keep up! Is the server overloaded? Running 5112ms or 102 ticks behind
[15:06:31] [Server thread/WARN]: Can't keep up! Is the server overloaded? Running 9508ms or 190 ticks behind
[15:07:15] [Server thread/WARN]: Can't keep up! Is the server overloaded? Running 14264ms or 285 ticks behind
[15:08:01] [Server thread/WARN]: Can't keep up! Is the server overloaded? Running 5517ms or 110 ticks behind
This is not good. Send us your plugin list and, if you have skript, send your skripts as well.