Spam error, what is it?

Failed to call hook 'OnEntityEnter' on plugin 'RaidableBases v3.0.3' (ArgumentNullException: Value cannot be null.
Parameter name: key)
  at System.Collections.Generic.Dictionary`2[TKey,TValue].FindEntry (TKey key) [0x00008] in <f98723dd4586469db5213ec59da723ca>:0 
  at System.Collections.Generic.Dictionary`2[TKey,TValue].TryGetValue (TKey key, TValue& value) [0x00000] in <f98723dd4586469db5213ec59da723ca>:0 
  at Oxide.Plugins.RaidableBases.IsProtectedScientist (BasePlayer player, BaseEntity entity) [0x00022] in <f9e77dbddf2f41e9973bd96017f51a5a>:0 
  at Oxide.Plugins.RaidableBases.OnEntityEnter (TriggerBase trigger, BasePlayer player) [0x00075] in <f9e77dbddf2f41e9973bd96017f51a5a>:0 
  at Oxide.Plugins.RaidableBases.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x012f5] in <f9e77dbddf2f41e9973bd96017f51a5a>:0 
  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <42f9bedc659b4f4786eb778d3cd58968>:0 
  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000de] in <8cb2d664f1574f2b96d53f1c1869d96a>:0 
  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <8cb2d664f1574f2b96d53f1c1869d96a>:0 

hi, you have bad npc plugin on your server that is not setting userID or UserIDString.

change in RaidableBases.cs on line 13062

if (npc == null)

to

if (npc == null || string.IsNullOrEmpty(npc.UserIDString))

and you need to fix your npc plugin

Thanks

Changed Status from Pending to Closed

Changed Fixed In to Next Version