Error message

You defined a new class - "X", but it is not added to any class configuration. Configure the class and then add lessons, or delete the class from the class configuration add/edit page.

What causes the error

You added a custom class using the Add more classes button, but didn’t include it in any class configuration.

How to fix it

You have two options:

1. If the class isn’t needed, delete it. Go to the class configuration section, click on Delete added classes and remove the class.
2. If you plan to use the class, assign it to an existing configuration or create a new one. You can do this from the class configuration section, where you’ll see all current setups.

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