Error message: could not save submission
- Student uploads file submission in assignment activity and saves submission
- Student goes back to submission and deletes the uploaded file.
- Student tries to save and gets Error message: could not save submission
Tested on two independent installations. Submission deletion in browser works fine.
If you follow the same steps to reproduce that issue on LMS it happens the same. The main difference is that on LMS the user has the possibility to "Remove submission" on a button next to the "Edit submission" button.
There is no remove submission WS available in the LMS part so, there's work to do there.