Describe the bug

Fix any TODO(***) comments, anywhere in our codebase, where *** is a name or username. Instead, *** should be an issue number. You will probably want to write a script to find these TODO comments. Consider going further and turning that script into a lint check that will ensure all TODO comments are correctly formatted in the future.

URL of the page where the issue is observed.

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Steps To Reproduce

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Expected Behavior

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Screenshots/Videos

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What device are you using?

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Operating System

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What browsers are you seeing the problem on?

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Browser version

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Additional context

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Tips for developers

Before tackling the bug, please use git bisect (see https://git-scm.com/docs/git-bisect) to investigate which PR caused it (you only need to go back as far as commit https://github.com/oppia/oppia/commits/9a334e9). If you find the PR, leave a comment on this issue pointing to it, or just say that it happened before commit 9a334e9 if you could reproduce it there. This will help us fix the issue by reverting the faulty PR.

Also, if this is your first issue, please make sure to follow https://github.com/oppia/oppia/wiki/Contributing-code-to-Oppia#choosing-a-good-first-issue and https://github.com/oppia/oppia/wiki/Contributing-code-to-Oppia#setting-things-up before claiming it. Thanks!