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.
The format parameter is now optional as the process of inferring it is completely abstracted from clients as the lib does the work for you.