As someone informed me, that's an easy one and there are many threads. The full solution is replace your disk pack for your clutch. Specifically the last fiber disk in the pack has become too thin and the metal centering rings, I think that is there purpose are eating into and grabbing the last metal disk. if you want, you can buy some time with a quick cleanup and swap. I did this because parts aren't available in Argentina.
Lay the bike on it's side, remove clutch cover, leave basket in bike but remove springs and bolts. You can remove all plates, keep track of order off things. The final metal plate will have gouges in it. Sand those smooth and swap with a plate from the middle of the pack, reassemble and enjoy. Takes 30 minutes. In reality, your final fiber disk is thinner than the combination of the two centering rings and you will be gouging the moved metal disk.
Also check your oil jet and clean it out. Many threads on this.