Problem with Deleting Unwanted Files

I’m running 2.3.0.3 on Linux. I have a very large backup to OneDrive. I’ve used it for a long time, orignally configured with keep all versions. It takes about 6 hours to run daily although not much is changing, and the versions up above 400. I need to reduce the versions in fact I want to use the smart setting, which is what I set it to hoping to delete a lot of old versions. It get stuck Deleting Unwanted Files. I can see it had done from looking at Trash on OneDrive, but after a while it goes on forever with no activity. Is there anyway to get out of this other than starting from scratch, which I suspect will take days.