[BUG] Theme button is not working

[JagjeetChauhan]

Description

The change theme button is not working

Screenshots

No response

Any additional information?

Can you assign this task to me under gssoc'24

What browser are you seeing the problem on?

No response

Checklist

• [X] I have checked the existing issues
• [X] I have read the Contributing Guidelines
• [X] I am willing to work on this issue (optional)