Wipe your blupeints and be sure your server is updated (rust server) and oxide is last version
i removed th eentire server folder and crated the server again but still i got this error!
(05:32:52) | 151.240.13.113:21265/76561198323380834/dooG naM [FesharMaster] joined [editor/76561198323380834]
(05:32:52) | Server Exception: Player Update
(05:32:52) | NullReferenceException: Object reference not set to an instance of an object
(05:32:52) | Server Exception: Player Update
(05:32:52) | NullReferenceException: Object reference not set to an instance of an object
(05:32:52) | Server Exception: Player Update
(05:32:52) | NullReferenceException: Object reference not set to an instance of an object
(05:32:52) | Server Exception: Player Update
(05:32:52) | NullReferenceException: Object reference not set to an instance of an object
(05:32:52) | Server Exception: Player Update
(05:32:52) | NullReferenceException: Object reference not set to an instance of an object
(05:32:52) | Server Exception: Player Update
(05:32:52) | NullReferenceException: Object reference not set to an instance of an object
(05:32:52) | Server Exception: Player Update
(05:32:52) | NullReferenceException: Object reference not set to an instance of an object
(05:32:52) | Server Exception: Player Update
(05:32:52) | NullReferenceException: Object reference not set to an instance of an object
(05:32:52) | 151.240.13.113:21265/76561198323380834/dooG naM [FesharMaster] disconnecting: NullReferenceException: Object reference not set to an instance of an object. UIBlueprints.UpdateBlueprints (System.Collections.Generic.IEnumerable`1[T] list) (at <00000000000000000000000000000000>:0) UIBlueprints.UpdateBlueprintList () (at <00000000000000000000000000000000>:0) UIBlueprints.Refresh () (at <00000000000000000000000000000000>:0) BasePlayer.InitLocalPlayer () (at <00000000000000000000000000000000>:0) BaseNetworkable.ClientSpawn (ProtoBuf.Entity info) (at <00000000000000000000000000000000>:0) Client.CreateOrUpdateEntity (ProtoBuf.Entity info, System.Int64 size) (at <00000000000000000000000000000000>:0) Client.OnEntities (Network.Message packet) (at <00000000000000000000000000000000>:0) Client.OnNetworkMessage (Network.Message packet) (at <00000000000000000000000000000000>:0) Facepunch.Network.Raknet.Client.HandleMessage () (at <00000000000000000000000000000000>:0) Facepunch.Network.Raknet.Client.Cycle () (at <00000000000000000000000000000000>:0) Client.Update () (at <00000000000000000000000000000000>:0) UnityEngine.Debug:LogException(Exception) Facepunch.Network.Raknet.Client:HandleMessage() Facepunch.Network.Raknet.Client:Cycle() Client:Update() Version: 50609
(05:32:52) | Server Exception: Player Update
(05:32:52) | NullReferenceException: Object reference not set to an instance of an object
(05:32:52) | Server Exception: Player Update
(05:32:52) | NullReferenceException: Object reference not set to an instance of an object
Merged postproblem solved after i validate my game fiels and re upload oxide!