It could potentially be related to a similar issue where all objects in Eevee render white (or sometimes black).
There is a lot of confusion with this issue. It appears there are multiple ways to fix it which might be caused by failed shader computation. I suggest first toggling the visibility of some of the objects or collections. I personally had this issue and found particle systems seemed to cause it for me, so toggling them worked.
Otherwise, you have to refresh something. It may be attempting to reopen the file