Referencing the same object in request and response schemas results in error

[SchabaJo]

Hi!

As the title says, referencing the same object in request and response schemas results in error when clicking Try it: Cannot read properties of undefined (reading 'PROPERTYNAME'). It happens when the referenced files reference a common object by themselves. It happens with JSON and YAML schemas. I have prepared some files to reproduce the issue (link in steps below).

Example:

• POST request body schema references file A.yaml
• response schema references file B.yaml
• A.yaml and B.yaml both reference C.yaml

Steps to reproduce:

1. checkout https://github.com/SchabaJo/vscode-openapi-reference-issue
2. open openapi.yaml with vscode
3. click Try it (between post and description)

Best Regards
Josef