Judging by the age of this post, I think @dmje fixed their issue. But in case someone else runs into this…
For me, it was that a json export file was added in the folder in my repo. Because it wasn’t a properly formatted ACF Group JSON file, ACF saw it as a group with zero fields.
Deleting this file fixed my issue. If anyone runs into something similar, check to make sure all of your json files are formatted correctly.
Hope this helps someone in the future! 😄
