Today I was driving normally going up a hill in 1st gear, switched to second and boom rpms shoot up for sec and a knocking/grinding noise occurs. I stop and clutch doesnt grab, pedal feels normal car revs in neutral engine is fine all gears work, however moment I let the clutch go out slowly it makes a terrible grinding/knocking noise however engine revves fine and sound seems independent maybe the dmf? Clutch just doesnt work.