How is this not pre alpha ?

Unity Engine
,
1

Netcode for gameobjects is just errors and more errors.
A high latency transport.

[Netcode] A ConnectionRequestMessage was received from the server on the client side. This should not happen. Please report this to the Netcode for GameObjects team at Issues · Unity-Technologies/com.unity.netcode.gameobjects · GitHub and include the following data: Message Size: 90. Message Content: 02 01 7d 9a e2 a5 01 b2 36 17 b3 01 46 c4 ca 04 01 39 3b e8 2c 01 ab c9 50 60 01 53 a3 38 44 01 d3 f6 1c b8 01 a6 22 89 97 01 b5 fe 01 74 01 be 97 be 73 01 9d 9a 5c 01 01 e9 51 97 17 01 8a f7 e7 83 01 42 7f 88 c6 01 97 a3 f5 46 01 00 00 00 00 01 e1 94 83 62 17 b6 1f 5d
UnityEngine.Debug:LogError (object)

ArgumentException: An item with the same key has already been added. Key: 1665640498
System.Collections.Generic.Dictionary2[TKey,TValue].TryInsert (TKey key, TValue value, System.Collections.Generic.InsertionBehavior behavior) (at <787acc3c9a4c471ba7d971300105af24>:0) System.Collections.Generic.Dictionary2[TKey,TValue].Add (TKey key, TValue value) (at <787acc3c9a4c471ba7d971300105af24>:0)
Unity.Netcode.Components.NetworkAnimator.InitializeRPCS_NetworkAnimator () (at :0)

This and walls of errors occurring everytime you enter playmode.

2

Analyze the errors and fix them. Those are almost guaranteed to originate from your setup and code. Without seeing either nor knowing which versions of editor and NGO you are using we cannot help.