core.controllers.base.UserFacingExceptions.InvalidInputException Expected a valid topic id to be provided

[lkbhitesh07]

This error occurred recently in test server:

Exception raised at https://www.oppiatestserver.org/rightshandler/get_topic_rights/ID: Expected a valid topic id to be provided.
Traceback (most recent call last):
  File "/layers/google.python.pip/pip/lib/python3.8/site-packages/webapp2.py", line 604, in dispatch
    return method(*args, **kwargs)
  File "/workspace/core/controllers/acl_decorators.py", line 3680, in test_can_view_any_topic_editor
    return handler(self, topic_id, **kwargs)
  File "/workspace/core/controllers/topic_editor.py", line 670, in get
    raise self.InvalidInputException(
core.controllers.base.UserFacingExceptions.InvalidInputException: Expected a valid topic id to be provided.

Where did the error occur? https://www.oppiatestserver.org/rightshandler/get_topic_rights/ID

Which release did the error occur in? 3-3-9

Frequency of occurrence Twice in the last 3 days(9 May).

General instructions for contributors
In general, the procedure for fixing server errors should be the following:

• Analyze the code in the file where the error occurred and come up with a hypothesis for the reason.
• Based on your hypothesis, determine a list of steps that reliably reproduce the issue (or confirm any repro instructions that have been provided). For example, if your hypothesis is that the issue arises due to a delay in a response from the backend server, try to change the code so that the backend server always has a delay, and see if the error then shows up 100% of the time on your local machine.
• Explain your proposed fix, the logic behind it, and any other findings/context you have on this thread. You can also link to a debugging doc if you prefer.
• Get your approach validated by an Oppia team member.
• Make a PR that fixes the issue.

[lkbhitesh07]

I have noticed that this issue and #20298 occurred for the same ID.