Non-nullable property 'Context' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable.

Non-nullable property 'Id' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable.

Non-nullable property 'Label' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable.

Non-nullable property 'Items' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable.

The variable 'exception' is declared but never used

Cannot convert null literal to non-nullable reference type.

Non-nullable property 'DbContext' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable.

Non-nullable property 'ConnectionString' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable.

Argument of type 'Dictionary<string, string>' cannot be used for parameter 'initialData' of type 'IEnumerable<KeyValuePair<string, string?>>' in 'IConfigurationBuilder MemoryConfigurationBuilderExtensions.AddInMemoryCollection(IConfigurationBuilder configurationBuilder, IEnumerable<KeyValuePair<string, string?>>? initialData)' due to differences in the nullability of reference types.