Cannot convert null literal to non-nullable reference type.

Cannot convert null literal to non-nullable reference type.

Non-nullable property 'RootDirectory' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.

Dereference of a possibly null reference.

Possible null reference return.

Possible null reference argument for parameter 'bytes' in 'void SBinaryWriter.Write(byte[] bytes)'.

Non-nullable field '_path' must contain a non-null value when exiting constructor. Consider declaring the field as nullable.

Non-nullable field '_safWriter' must contain a non-null value when exiting constructor. Consider declaring the field as nullable.

Non-nullable property 'Heightmap' must contain a non-null value when exiting constructor. Consider declaring the property as nullable.