Mark Schmidts

I have a very similiar problem ``` File "/app/service/app.py", line 10, in from service.generated.encoder import JSONEncoder File "/app/service/generated/encoder.py", line 1, in from connexion.apps.flask_app import FlaskJSONEncoder ModuleNotFoundError: No module named 'connexion.apps.flask_app'...

Actually the issue is probably solved by using `FlaskJSONProvider`. Flask changed with [a version update](https://github.com/spec-first/connexion/pull/1582/files). Here's the current jsonproviderClass: https://github.com/spec-first/connexion/blob/b244d809089eb584ce3e9661d619ed5564ca4103/connexion/frameworks/flask.py#L123 I think the current code that the generator generates is...

This might fix it https://github.com/OpenAPITools/openapi-generator/pull/17144/files But I can't get the dev setup running. If someone can check the PR, this issue could be fixed.