Error in consoleNot An Issue

Failed to call hook 'OnPlayerSpawn' on plugin 'Loadoutless v1.3.0' (ArgumentNullException: Value cannot be null.

Parameter name: key)

at System.Collections.Generic.Dictionary`2[TKey,TValue].FindEntry (TKey key) [0x00008] in <e1a80661d61443feb3dbdaac88eeb776>:0

at System.Collections.Generic.Dictionary`2[TKey,TValue].TryGetValue (TKey key, TValue& value) [0x00000] in <e1a80661d61443feb3dbdaac88eeb776>:0

at Oxide.Core.Libraries.Permission.GetUserData (System.String id) [0x00000] in <4452f821def6406d834e4149849fe7ea>:0

at Oxide.Core.Libraries.Permission.UserHasPermission (System.String id, System.String perm) [0x00012] in <4452f821def6406d834e4149849fe7ea>:0

at Oxide.Plugins.Loadoutless.OnPlayerSpawn (BasePlayer player) [0x00000] in <53621436e86d45e89ad3b56796a20d0d>:0

at Oxide.Plugins.Loadoutless.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x002a2] in <53621436e86d45e89ad3b56796a20d0d>:0

at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <9affce1cd15c4ec183941adef8db1722>:0

at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <4452f821def6406d834e4149849fe7ea>:0

at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <4452f821def6406d834e4149849fe7ea>:0

That doesn't appear to be an issue with this plugin, but rather an error with Oxide trying to get your permission data.
My server started lagging recently, so i contacted to my host and they said that it is lagging because few my plugins are creating errors. And this might be one error what do i need to do?

Failed to call hook 'OnPlayerSpawn' on plugin 'Loadoutless v1.3.0' (ArgumentNullException: Value cannot be null.

Parameter name: key)

at System.Collections.Generic.Dictionary`2[TKey,TValue].FindEntry (TKey key) [0x00008] in <e1a80661d61443feb3dbdaac88eeb776>:0

at System.Collections.Generic.Dictionary`2[TKey,TValue].TryGetValue (TKey key, TValue& value) [0x00000] in <e1a80661d61443feb3dbdaac88eeb776>:0

at Oxide.Core.Libraries.Permission.GetUserData (System.String id) [0x00000] in <4452f821def6406d834e4149849fe7ea>:0

at Oxide.Core.Libraries.Permission.UserHasPermission (System.String id, System.String perm) [0x00012] in <4452f821def6406d834e4149849fe7ea>:0

at Oxide.Plugins.Loadoutless.OnPlayerSpawn (BasePlayer player) [0x00000] in <2692f85777564b44b703a13c122c9632>:0

at Oxide.Plugins.Loadoutless.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x002a2] in <2692f85777564b44b703a13c122c9632>:0

at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <9affce1cd15c4ec183941adef8db1722>:0

at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <4452f821def6406d834e4149849fe7ea>:0

at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <4452f821def6406d834e4149849fe7ea>:0

Locked automatically