This is an error introduced as part of the cache refactor to reduce the occurrence of #52437 .

Instead of attempting to re-download the asset, the tool will crash with this NSM error. I expect this to be severe since it should match the number of occurrences of the previously fixed issue (which was high) and was independently reported (#65449) twice before it was fixed.

The fixing PR is #65797 which is fairly small, self-contained, and tested.