### Steps to reproduce

1. Unclear

2. The server responded with an 500 error code (error could not be found on AppSignal)


### What is the buggy behavior?

* In case fetching the activity updates fail with a 500 status code, that error is displayed to the user without that user being able to gather information from it:


<img class="op-uc-image op-uc-image_inline" src="/api/v3/attachments/236123/content"> <img class="op-uc-image op-uc-image_inline" src="/api/v3/attachments/236124/content">

### What is the expected behavior?

1. Begin of the insertionIfEnd of the insertion Begin of the deletion Ideally noEnd of the deletion error Begin of the insertionreturned on polling, surpressEnd of the insertion Begin of the deletion inEnd of the deletion the Begin of the insertionerror. (Already done)End of the insertion Begin of the deletion first placeEnd of the deletion

2. If Begin of the deletion there is an error, either do not show theEnd of the deletion error Begin of the insertionreturned on user action (submitting a comment on editEnd of the insertion Begin of the deletion in this case expecting it to only be temporary (and fixed by the next request)End of the deletion or Begin of the insertionnew comment, for example),End of the insertion display Begin of the insertiontheEnd of the insertion Begin of the deletion a helpfulEnd of the deletion error Begin of the insertionmessageEnd of the insertion Begin of the deletion message. Ideally, display some sort of &quot;connections broken&quot; indication nearEnd of the deletion the Begin of the insertionserver returns.End of the insertion Begin of the deletion activities.End of the deletion