With regards to https://github.com/airbytehq/airbyte/issues/2670 issue, I am having the same issue. I am not clear with solution. Can somebody help with this?

Please open a new issue and post complete logs there with complete information about your enviroment what source and destination are you trying

resolved the issue, it was silly mistake. spec.yaml was created by standard framework which was working in testing with python. AIRBYTE UI integration was searching for spec.json. silly me 😛 . I did not raise any ticket.