'User not found in the system'

[ecv]

This morning (Friday 20 March ~14:00 UTC) I was presented with the following by both staff and cloud portals:

I was unable to log in to either portal and there was no apparent way to clear this, save a red 'x' appeared on mouseover.

I got past this by clicking the red 'x' that appeared on mouseover, removing both of my User Accounts and reädding them via gsuite login.

Separate solutions possible. I think we shouldn't just clear the log jam, but also clarify the error handling. (In the event that a 'User could not be found in the system', what would someone do? – Could the logic that leads to this string being shown be described better?)