Some players (not all) get the following when they try to join server.
What is going on? :(

[Welcomer] ✔ mawesan joined the server from Denmark

/76561198063805744/mawesan disconnecting: Exception (cs:55065): AssertionException: Assertion failure. Values are not equal. Expected: 0 == 1 UnityEngine.Assertions.Assert.Fail (System.String message, System.String userMessage) (at <00000000000000000000000000000000>:0) UnityEngine.Assertions.Assert.AreEqual[T] (T expected, T actual, System.String message, System.Collections.Generic.IEqualityComparer`1[T] comparer) (at <00000000000000000000000000000000>:0) UnityEngine.Assertions.Assert.AreEqual[T] (T expected, T actual, System.String message) (at <00000000000000000000000000000000>:0) UnityEngine.Assertions.Assert.AreEqual (System.Int32 expected, System.Int32 actual) (at <00000000000000000000000000000000>:0) MaterialReplacement.ReplaceRecursive (UnityEngine.GameObject obj, UnityEngine.Material[] find, UnityEngine.Material[] replace) (at <00000000000000000000000000000000>:0) Rust.Workshop.Skin.Apply (UnityEngine.GameObject obj, Skinnable skinnable, UnityEngine.Material[] Materials) (at <00000000000000000000000000000000>:0) ItemModWearable.OnObjectSetup (Item item, UnityEngine.GameObject obj) (at <00000000000000000000000000000000>:0) Wearable.OnItemSetup (Item item) (at <00000000000000000000000000000000>:0) SkinnedMultiMesh.DoItemSetup (SkinnedMultiMesh+Part part, System.Collections.Generic.List`1[T] itemSetups) (at <00000000000000000000000000000000>:0) SkinnedMultiMesh.RebuildModel (PlayerModel model, System.Boolean reset) (at <00000000000000000000000000000000>:0) PlayerModel.Rebuild (System.Boolean reset) (at <00000000000000000000000000000000>:0) BasePlayer.RebuildWorldModel () (at <00000000000000000000000000000000>:0) BasePlayer.UpdateClothesIfNeeded () (at <00000000000000000000000000000000>:0) BasePlayer.ClientUpdate () (at <00000000000000000000000000000000>:0) BasePlayer.ClientCycle (System.Single deltaTime) (at <00000000000000000000000000000000>:0) Client.Update () (at <00000000000000000000000000000000>:0)

[Welcomer] ☒ mawesan left the server (Disconnected)

runescape

If you take (literally) 1 minute to search these forums you'll find what causes it.
And for god's sake mask other people's IP address.

its just an external ip, who cares, its easy to obtain even with little to no knowledge.
And if its so easy to find, then please send a link instead of just bashing?.
I can find a lot of similar things, but they all relate to other plugins - magic loot etc. i dont have that.
I cant find anyone with my code, if you found one - link it please :)