Lesson 'Physics' (teacher Jane Doe): group '6B' not found in the class groups list.

Last updated: Mar 23, 2026

At a glance

A lesson references a class group that no longer exists.

What causes this error

A lesson is assigned to a class group that has been deleted or renamed after the lesson was created. The generator cannot find the group in the current list.

How to fix it

  1. Restore the group — Go to the Classes section and re-add the group with the exact same name.
  2. Update the lesson — Go to the Lessons section, find the affected lesson, and assign it to an existing group.
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