I get this spammed in console when updating to 3.0.1:

Failed to call hook 'OnCollectiblePickup' on plugin 'ZLevelsRemastered v3.0.1' (KeyNotFoundException: The given key was not present in the dictionary.) at System.Collections.Generic.Dictionary`2[TKey,TValue].get_Item (TKey key) [0x0001e] in <eae584ce26bc40229c1b1aa476bfa589>:0 at Oxide.Plugins.ZLevelsRemastered.levelHandler (BasePlayer player, Item item, System.String skill, System.Boolean powerTool) [0x00070] in <d156384b69ba4beea5c2fa39898cfbfb>:0 at Oxide.Plugins.ZLevelsRemastered.OnCollectiblePickup (Item item, BasePlayer player, CollectibleEntity entity) [0x00200] in <d156384b69ba4beea5c2fa39898cfbfb>:0 at Oxide.Plugins.ZLevelsRemastered.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x00986] in <d156384b69ba4beea5c2fa39898cfbfb>:0 at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <60c318df79ed41688ea59335e48d61ad>:0 at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <9882f28dc2204b4dba514a9ad18f5042>:0 at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <9882f28dc2204b4dba514a9ad18f5042>:0

here too
massive :(

Same as on our server,...

"for example", OnDispenserGather, OnCollectiblePickup,...

Failed to call hook 'OnDispenserGather' on plugin 'ZLevelsRemastered v3.0.1' (KeyNotFoundException: The given key was not present in the dictionary.)
  at System.Collections.Generic.Dictionary`2[TKey,TValue].get_Item (TKey key) [0x0001e] in :0 
  at Oxide.Plugins.ZLevelsRemastered.levelHandler (BasePlayer player, Item item, System.String skill, System.Boolean powerTool) [0x00070] in <1f52643be0c647b58f7caaaa0258ec79>:0 
  at Oxide.Plugins.ZLevelsRemastered.OnDispenserGather (ResourceDispenser dispenser, BaseEntity entity, Item item) [0x001f9] in <1f52643be0c647b58f7caaaa0258ec79>:0 
  at Oxide.Plugins.ZLevelsRemastered.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x008d0] in <1f52643be0c647b58f7caaaa0258ec79>:0 
  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <60c318df79ed41688ea59335e48d61ad>:0 
  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <9882f28dc2204b4dba514a9ad18f5042>:0 
  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <9882f28dc2204b4dba514a9ad18f5042>:0 

Failed to call hook 'OnCollectiblePickup' on plugin 'ZLevelsRemastered v3.0.1' (KeyNotFoundException: The given key was not present in the dictionary.)
  at System.Collections.Generic.Dictionary`2[TKey,TValue].get_Item (TKey key) [0x0001e] in :0 
  at Oxide.Plugins.ZLevelsRemastered.levelHandler (BasePlayer player, Item item, System.String skill, System.Boolean powerTool) [0x00070] in <1f52643be0c647b58f7caaaa0258ec79>:0 
  at Oxide.Plugins.ZLevelsRemastered.OnCollectiblePickup (Item item, BasePlayer player, CollectibleEntity entity) [0x00200] in <1f52643be0c647b58f7caaaa0258ec79>:0 
  at Oxide.Plugins.ZLevelsRemastered.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x00986] in <1f52643be0c647b58f7caaaa0258ec79>:0 
  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <60c318df79ed41688ea59335e48d61ad>:0 
  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <9882f28dc2204b4dba514a9ad18f5042>:0 
  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <9882f28dc2204b4dba514a9ad18f5042>:0 

fixed in 3.0.3

duplicate thread, locking