Dereference of a possibly null reference.

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

Dereference of a possibly null reference.

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.

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

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

Possible null reference assignment.

Possible null reference assignment.

Dereference of a possibly null reference.

Possible null reference argument for parameter 'provider' in 'SQLHelper? ServiceProviderServiceExtensions.GetService<SQLHelper>(IServiceProvider provider)'.