Upload Adobe Stock from LR Classic without getting the dreaded "Upload failed because of" dialog?

I am growing sick and tired of getting the same refusal dialog about uploading photos every time I am trying to submit the pictures for consideration by Adobe Stock using THEIR upload export in LRC.  Especially since it takes a long time for each photo UL to fail; it doesn't give me any kind of clue aside from "technical difficulties" as to what the failure was; it doesn't give me the name of any kind of log file I might could manually search.  This cuts down my submissions to where it becomes more painful that the benefit from earning anything from the sales.