The most likely fault is the tubing in the door has frozen.
You'll need to take the panel off the door, release the tube at the top and bottom.
Pull it out and defrost it.
Refit the tube and try it again.
You could try disconnecting the tube at the bottom and use a hair dryer to try and defrost it, blow up the tube every now and then to see if it's cleared.
Hope this helps
Let me know how it goes or if you need more help
The panel inside doesn't come off and doesn't need to.
You have to strip the assembly in the door out, from the outside to get to the part holding the tube.
Why not try warming the tube up with a hairdryer? Much easier than stripping the appliance apart.
I'm not in the office now and don't have information on your appliance at home so I don't have any information at hand to help you strip the door assembly. (That's if there is any information on that in the service manuals).
Look at the job again and see how the tube is held in place. Release it at the top and you can pull it out of the tube it runs in.
Good luck with it.
Sorry, I don't have the manual for your appliance at home.
I'll opt out of the question for the time being.
This will open it to all experts again.
I'll opt in again once I've had a look at the manual.