Crashs intempestifs

Bonjour. Mon serveur ne cesse de crasher, je vous copie colle les 2 derniers logs de la santé du serveur :

1er :
[22:08:13] : Ambiguous plugin name ColoredTablist' for filesplugins/coloredtablist-2.jar’ and plugins/coloredtablist.jar' inplugins’
[22:08:17] : Error occurred while enabling DisguiseMorph v1 (Is it up to date?)
java.lang.ClassNotFoundException: me.libraryaddict.disguise.disguisetypes.Disguise
[22:08:18] : [TuxTwoLib] New version download was unsuccessful. Please download the correct version of the library from http://dev.bukkit.org/server-mods/tuxtwolib/
[22:08:34] [Server thread/WARN]: while parsing a block mapping
[22:09:01] : [Factions] Plugin Factions v2.7.5 has failed to register events for class com.massivecraft.factions.spigot.EngineSpigot because org/bukkit/event/player/PlayerInteractAtEntityEvent does not exist.
[22:09:06] : ebean.properties not found
[22:09:21] [Server thread/WARN]: Can’t keep up! Did the system time change, or is the server overloaded? Running 2141ms behind, skipping 42 tick(s)
[22:09:43] : Could not pass event PlayerJoinEvent to cTablist v2.0
java.lang.IllegalArgumentException: Player list names can only be a maximum of 16 characters long
[22:10:36] : Could not pass event PlayerJoinEvent to cTablist v2.0
java.lang.StringIndexOutOfBoundsException: String index out of range: 16

2ème :

[22:59:52] : Could not pass event PlayerJoinEvent to cTablist v2.0
java.lang.StringIndexOutOfBoundsException: String index out of range: 16
[22:59:54] [Server thread/WARN]: Can’t keep up! Did the system time change, or is the server overloaded? Running 8009ms behind, skipping 160 tick(s)
[23:00:03] [Server thread/WARN]: Can’t keep up! Did the system time change, or is the server overloaded? Running 2214ms behind, skipping 44 tick(s)
[23:00:27] : Could not pass event PlayerJoinEvent to cTablist v2.0
java.lang.IllegalArgumentException: Player list names can only be a maximum of 16 characters long
[23:00:27] [Server thread/WARN]: Can’t keep up! Did the system time change, or is the server overloaded? Running 3540ms behind, skipping 70 tick(s)
[23:00:28] : Could not pass event EntityDamageByEntityEvent to CombatLog v1.8.11
java.lang.NoClassDefFoundError: com/massivecraft/factions/entity/BoardColls

:confused:

Quel est le port de votre serveur ?