@acn I had this same issue about clumping detection. Simply pressing resume w/o doing anything else would complete the job without further issue. Thinking back to when it started happening, what I ended figure out was one of the “add ons” I printed was the culprit. I had printed out the hinged tool tray that sits on top of the flat surface above the display and screws into the z axis support. screwed on A1 Mini tool storage box with lid by Kri - MakerWorld . I think because it was so close to the heat bed and pretty much the same level as the heat bed, when the “clump detection” happened, it would sense the toolbox and think the filament was clumping. This appears to have been confirmed by the author in the description; but I still had an issue with mine. I think mine got heated and warped and moved too close to the heat bed… so I just removed it completely. Not sure if this is your issue or not, but just wanted to pass it along.
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