"Equip right solo" would also unequip any other weapon you may be carrying. (i.e. your left hand)
(a new player starts with their weapon in their left hand)
Often they ask what's wrong cause game asks them to equip knife in right to light the fire and they do that, without unequipping their axe form the left hand. Then they're stuck - some ask for help, some just flat out quit the game cause they believe this to be a bug.