This repo is to provide a minimal reproduction of an issue with OpenAPI in .NET 9.

It was generated using JetBrains Rider, the only change made was to remove the if statement surrounding app.MapOpenApi();.

Process:

• Build using provided Dockerfile
• Run resulting image
• Attempt to go to http://localhost:8080/openapi/v1.json
• System.ArgumentNullException: Value cannot be null. (Parameter 'type') is logged by the container

Versions:

• .NET (on host): 9.0.100-preview.5.24307.3
• Last tested at: 19 Jun 2024 00:12 UTC