Nbdev_test_nbs in CI:TypeError: 'coroutine' object is not subscriptable

Hey all, I’m dipping my toes in back in the nbdev waters but getting this error on github’s CI tests where all tests are failing on nbdev_test_nbs:

TypeError: 'coroutine' object is not subscriptable

Looks like its related to a funky nbconvert and/or jupyter-client issue that has just cropped up (again) in the past day or so

I’ve fixed it and my tests are passing by pinning the requirements in my setting.ini file to:

nbconvert==5.6.1 jupyter-client==6.1.2

I only pin to nbconvert==5, I have jupyter_client= 6.1.12 and all works fine. (Over-pinning should be avoided like the plague, creates lots of other issues later).