Getting NullReferenceException when deserializing a yaml document

[lucassklp]

Describe the bug
I aim trying to deserialize a yaml open api file, but it's getting NullReferenceException

OpenApi File To Reproduce
https://api.codacy.com/api/api-docs/swagger.yaml

Expected behavior
The document shoud be serialized correctly

Screenshots/Code Snippets

Code to reproduce available here:
https://github.com/lucassklp/Rx.Http.CodeGen/tree/ce2a7b97ec91ba09e56f3c77d62e1730abe1463d

Methods i'm calling:

Stacktrace:

Additional context
Version: 2.0.0-preview2

[MaggieKimani1]

Hi, do you mind sharing the OpenApi file you're using for us to reproduce this?

[lucassklp]

The link of file is on description:

https://api.codacy.com/api/api-docs/swagger.yaml

[lucassklp]

Any updates here?

Thanks

[MaggieKimani1]

Hi @lucassklp, sorry for the delay in response.
We managed to get rid of the OpenApiDocument.Load(TextReader reader) overload and replaced it with this

OpenAPI.NET/src/Microsoft.OpenApi/Models/OpenApiDocument.cs

Lines 536 to 541 in 878dd08

	public static ReadResult Load(MemoryStream stream,
	string? format = null,
	OpenApiReaderSettings? settings = null)
	{
	return OpenApiModelFactory.Load(stream, format, settings);
	}

in the subsequent preview releases we've had i.e from 2.0.0-preview3 and above.
I'd recommend you try loading it from a memory stream if you prefer to retain the operation as synchronous otherwise you can use our async overloads.