Hi there @Marcela_Villegas - sorry about the late reply.
It looks like this problem isn't solved --- the error you pasted below still says the same thing:
"[Errno 38] Function not implemented: '/media/hjunca/EXTERNAL2/tmp/tmp.FKiJ4m1XRH/qiime2-provenance-n3foef5i/artifacts/57f511e4-2855-4755-bbe1-412b23640110'")]
Maybe try setting your TMPDIR to this external drive AND move your data to that drive, as well?