Helli, i see same error today, check it please, thanks ;)
Failed to call hook 'CanBuild' on plugin 'EntityLimit v2.1.3' (NotImplementedException: The method or operation is not implemented.)
at System.Globalization.CompareInfo.IndexOfCore (System.String source, System.String target, System.Int32 startIndex, System.Int32 count, System.Globalization.CompareOptions options, System.Int32* matchLengthPtr) [0x00006] in <47fc8c70fa834cbf8141d7c1a7589125>:0
at System.Globalization.CompareInfo.IndexOf (System.String source, System.String value, System.Int32 startIndex, System.Int32 count, System.Globalization.CompareOptions options, System.Int32* matchLengthPtr) [0x00071] in <47fc8c70fa834cbf8141d7c1a7589125>:0
at System.String.ReplaceCore (System.String oldValue, System.String newValue, System.Globalization.CultureInfo culture, System.Globalization.CompareOptions options) [0x0005d] in <47fc8c70fa834cbf8141d7c1a7589125>:0
at System.String.Replace (System.String oldValue, System.String newValue, System.StringComparison comparisonType) [0x00055] in <47fc8c70fa834cbf8141d7c1a7589125>:0
at Oxide.Plugins.EntityLimit.ReplaceArgs (System.String message, System.Collections.Generic.Dictionary`2[TKey,TValue] args) [0x0005c] in <eea05665beca41d28e9fc918eac0801c>:0
at Oxide.Plugins.EntityLimit.GetMessage (Oxide.Plugins.EntityLimit+MessageType key, System.String playerID, System.Object[] args) [0x00020] in <eea05665beca41d28e9fc918eac0801c>:0
at Oxide.Plugins.EntityLimit.SendMessage (System.Object receiver, Oxide.Plugins.EntityLimit+MessageType key, System.Object[] args) [0x00013] in <eea05665beca41d28e9fc918eac0801c>:0
at Oxide.Plugins.EntityLimit.CheckBuild (BasePlayer player, System.String fullName) [0x002d2] in <eea05665beca41d28e9fc918eac0801c>:0
at Oxide.Plugins.EntityLimit.CanBuild (Planner planner, Construction entity, Construction+Target target) [0x00007] in <eea05665beca41d28e9fc918eac0801c>:0
at Oxide.Plugins.EntityLimit.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x001db] in <eea05665beca41d28e9fc918eac0801c>:0
at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <753b27d02c104b8d8166056be06d5c55>:0
at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <1a298a556ab640a3a0e3fbde04ac5b5c>:0
at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <1a298a556ab640a3a0e3fbde04ac5b5c>:0