C# 9 Nullable Reference Types - Unexpected NullReferenceException in Asynchronous Method
I'm wondering if anyone has experience with I'm converting an old project and I'm working with C# 9 and trying to implement nullable reference types in an asynchronous method, but I'm running into a `NullReferenceException` that I need to seem to debug. The goal is to fetch data asynchronously and work with the results, ensuring that null values are handled correctly. Here is the relevant part of my code: ```csharp public async Task<MyData?> GetDataAsync(int id) { var result = await _dbContext.MyData.FindAsync(id); return result; } public async Task ProcessData(int id) { var data = await GetDataAsync(id); // Here I expect data to be not null if found Console.WriteLine(data.SomeProperty); } ``` I have enabled nullable reference types in my project, and I've declared `GetDataAsync` to return a `MyData?`, expecting that the calling method will handle any null values appropriately. However, I'm working with a `NullReferenceException` at the line where I access `data.SomeProperty`. I've already checked that the `id` is valid and that there are entries in the database. I've tried adding null checks like: ```csharp if (data != null) { Console.WriteLine(data.SomeProperty); } else { Console.WriteLine("No data found."); } ``` But I still see the exception. It's like the compiler isn't recognizing that `data` can be null despite my nullability annotations. I'm using EF Core 5.0 and have checked that my database context is set up correctly. Any insights on why this `NullReferenceException` is occurring and how I can properly handle null values in this asynchronous context would be greatly appreciated. Also, are there any best practices I should follow for working with nullable reference types in asynchronous methods? This is my first time working with C# 3.10. I'm open to any suggestions. This is happening in both development and production on Windows 11.