500 error when trying to edit details or copy the lesson, a.k.a. 'adhoclearnersgroup' woes

Observed behavior

Seems impossible to edit lesson details or copy it elsewhere. All resources are present on the facility, and the lesson is assigned to entire class.

Expected behavior

Ability to edit & copy the lesson.

User-facing consequences

Troubled coach.

Errors and logs

Uncaught (in promise) Error: Request failed with status code 500
    createError createError.js:16
    settle settle.js:17
    handleLoad xhr.js:61

Logs

debug-last-day.zip kolibri.zip

Steps to reproduce

Same 500 error in both cases:

• Open an existing lesson in the Plan tab
• Click to open the Options and select Edit details

OR

• Select Copy and try to copy the lesson in another class

Context

• Kolibri version: current 0.14.x release branch
• Operating system: Ubuntu 18.04
• Browser: Firefox

cc @rtibbles

[rtibbles]

In examining the database that produced this error, what appears to have happened is that the tree_id value of the Facility object in question has been set to 3, while the tree_id value of all its descendant collections is set to 1.

I am not entirely sure what would have caused this, but this database has engaged in syncing, which seems like the likeliest candidate.

[radinamatic]

what I meant was, I think the data corruption seems likely to have happened in an older beta.

Gotcha, thanks for clarifying! 🤞

I’ll reopen if I manage to step into this mudhole again 😛