SwaggerEditor Generate Server failing with an HTTP 400 response from backend

Hello,

I am attempting to use the "Generate Server" function in the Swagger Editor, but am receiving an HTTP 400 response from the backend. A zip containing the generated server is never downloaded. The same happens for all server types (Go, Spring, etc.), and also happens when attempting to generate a client. I've tried both the hosted editor as well as a local Docker image of the editor. Both appear to call to the same backend, which is returning the 400. I've tried multiple definitions, including the sample PetStore one, and am still getting the 400 response. Am I doing something wrong?

Thanks in advance!