Error when deleting a lesson

[rotimi-best]

Issue Description

Implement cascade delete on any lesson related query.

Steps to Reproduce

No response

Expected Behavior

No response

Current Behavior

No response

Screenshots (optional)

No response

Operating System [e.g., Windows 10]

No response

Browser [e.g., Chrome, Firefox]

No response

Environment (locally, production, selfhosted)

No response

Please check the boxes that apply to this issue report.

• [ ] I have searched the existing issues to make sure this is not a duplicate.
• [ ] I have provided steps to reproduce the issue.
• [ ] I have included relevant environment information.
• [ ] I have included any relevant screenshots.
• [ ] I understand that this is a voluntary contribution and that there is no guarantee of resolution.
• [ ] I want to work on creating a PR for this issue if approved

[github-actions[bot]]

Thanks for the issue, our team will look into it as soon as possible. If you would like to work on this issue, please wait for us to decide if it's ready. To claim an issue that does not have the "needs triage" label, please leave a comment that says ".take". If you have any questions, please reach out to us on Discord or follow up on the issue itself. For full info on how to contribute, please check out our contributors guide