I'm afraid so.
Pretty difficult machine to work on.
Manually empty the water.
Take it out (disconnect the services if necessary)
Take the 2 screws at the front and the 2 at the back holding the base to the cabinet out.
Put towels down and lay it on it's back.
Take the base panel off (the float switch
is attached to the base)
You can now access the drain pump.
To find it, follow the drain hose into the machine and it's attached to the drain pump.
Take the drain pump off.
Remove the debris blocking it.
Reassemble and reconnect the machine.
If all is well, it will be working again.
Check it out, see how it goes and get back to me if you need more help.
Hope this helps