I'm also encountering this issue. It specifically occurs when Unity tries to serialize a NetworkVariable<FixedString32Bytes>. I am able to set the value of the network variable and read it again ...

BedrockLauncher.Exceptions.AppLaunchFailedException: Object reference not set to an instance of an object. ---> System.NullReferenceException: Object reference not set to an instance of an object. at ...

Ошибка в Unity NullReferenceException: Object reference not set to an instance of an object ...

The Object reference not set to an instance of an object error is a common Windows issue from Microsoft Visual Studio. This error occurs when a Visual Studio object is absent, null, or inaccessible.

We show you how to fix Object reference not set to an instance of an object error prompt which you may see in Microsoft Visual Studio.