Following/Followers list always showing "An error occurred" message

In the following/followers tabs under user profile page, it always shows "An error occurred" message after I clicked the "More" button.

To reproduce

Steps to reproduce the behavior:

1. Go to the profile page of any user
2. Open "Following" tab
3. Click the "More" button and see the error.

Expected behavior

It should not show any message once it loads all friends/followers.

Screenshots