UnityEngine.Network' is obsolete: The legacy networking system has been removed in Unity 2018.2.

[IreneXu199]

After importing the project, I got 3 errors messages:

Assets/CaptainsMess/CaptainsMessDebugGUI.cs(21,44): error CS0619: UnityEngine.Network' is obsolete: The legacy networking system has been removed in Unity 2018.2. Use Unity Multiplayer and NetworkIdentity instead.' Assets/CaptainsMess/CaptainsMessDebugGUI.cs(21,44): error CS0619: UnityEngine.Network.player' is obsolete: The legacy networking system has been removed in Unity 2018.2. Use Unity Multiplayer and NetworkIdentity instead.' Assets/CaptainsMess/CaptainsMessDebugGUI.cs(21,51): error CS0619: UnityEngine.NetworkPlayer.ipAddress' is obsolete: The legacy networking system has been removed in Unity 2018.2. Use Unity Multiplayer and NetworkIdentity instead.'

And when I tried building the project on iOS, I got this one more message:

UnityEditor.BuildPlayerWindow+BuildMethodException: Error building Player because scripts have compile errors in the editor at UnityEditor.BuildPlayerWindow+DefaultBuildMethods.BuildPlayer (BuildPlayerOptions options) [0x0021f] in /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPlayerWindowBuildMethods.cs:187 at UnityEditor.BuildPlayerWindow.CallBuildMethods (Boolean askForBuildLocation, BuildOptions defaultBuildOptions) [0x0007f] in /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPlayerWindowBuildMethods.cs:94 UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)
I am new to Unity so I don't know which one to focus on. Any help will be appreciated

[yakmyakmyakm]

Networking is obsolete in Unity 2018+
replace CaptainsMessDebugGUI.cs with the file i attached.
it is using System.net to display your IP for debugging instead of using Unity.Networking

CaptainsMessDebugGUI.cs.zip