gRPC JSON transcoding documentation with Swagger / OpenAPI error

[Varorbc]

Is there an existing issue for this?

• I have searched the existing issues

Describe the bug

I followed the tutorial and enabled Aot, the program got an exception

Expected Behavior

No response

Steps To Reproduce

No response

Exceptions (if any)

No response

.NET Version

No response

Anything else?

No response

[adityamandaleeka]

This sounds a lot like what @captainsafia fixed in #49393

[Varorbc]

The latest daily build still throws exceptions

[adityamandaleeka]

@captainsafia can you take a look at this?

[captainsafia]

@Varorbc Are you able to share a repro for this issue?

From the original details in your report, this error is expected because it appears that you have enabled PublishAoT in an app that uses System.Text.Json to serialize types but did not configure the JSON source generator correctly by defining a JsonSerializerContext as outlined here.

Hi @Varorbc. We have added the "Needs: Author Feedback" label to this issue, which indicates that we have an open question for you before we can take further action. This issue will be closed automatically in 7 days if we do not hear back from you by then - please feel free to re-open it if you come back to this issue after that time.

[Varorbc]

@captainsafia I followed the tutorial and enabled Aot

[captainsafia]

From the original details in your report, this error is expected because it appears that you have enabled PublishAoT in an app that uses System.Text.Json to serialize types but did not configure the JSON source generator correctly by defining a JsonSerializerContext as outlined here.

@Varorbc Do you repro the issue when you enable AoT without configuring the Swagger?

FYI, although you see Swagger UI middleware in the stacktrace, this is an artifact of the way the Swashbuckle is configured in the middleware pipeline and not exactly related to it.

The exception message you've shared with me leads me to believe that it's related to enabling AoT in your application and not having the STJ generator enabled in your project per the instructions above.

If you're able to upload a repro of your project to GitHub, that might also help.