Cannot convert null literal to non-nullable reference type.

Member 'ConsoleWriter.InitializeLifetimeService()' overrides obsolete member 'MarshalByRefObject.InitializeLifetimeService()'. Add the Obsolete attribute to 'ConsoleWriter.InitializeLifetimeService()'.

'Color' overrides Object.Equals(object o) but does not override Object.GetHashCode()

'Color' defines operator == or operator != but does not override Object.GetHashCode()

'ExperimentalFlag' defines operator == or operator != but does not override Object.Equals(object o)

'ExperimentalFlag' defines operator == or operator != but does not override Object.GetHashCode()

'AesCryptoServiceProvider' is obsolete: 'Derived cryptographic types are obsolete. Use the Create method on the base type instead.' (https://aka.ms/dotnet-warnings/SYSLIB0021)

'IVariableBase.Type' hides inherited member 'IDatabaseObject.Type'. Use the new keyword if hiding was intended.

'IClient.IsConnected' hides inherited member 'INetwork.IsConnected'. Use the new keyword if hiding was intended.