File System Hierarchy
A part repository must have a top-level part file and an api directory. Without both, it is not a valid part. Every part has a database. panel, site, and localization directories are optional.
Correct
part
api/
part
api/
panel/
site/
Incorrect
part
panel/
part
site/
Fix
Add the missing API implementation if this repository is a part, or remove its part file if it is not.