Leaving crumbs

My hoover is starting to leave a lot of crumbs when hoovering, it seems to drop them out when it's going over things like rugs. Any advise on how to stop it?

usually it’s just the dustbin or brush that needs a clean. empty it, check the filter and clean the main and side brushes. also make sure the brushes are seated properly and maybe use carpet boost on rugs, that usually fixes it.

Yes double check everything.   I had similar in areas and just increased suction.