Thank you both so much for the manual and video. I was able to disassemble the printer head and remove the filament stuck in the white part.
I noticed in the instruction manual that you're supposed to apply copper grease around the hole where the nozzle goes. I don't have any copper grease, should I obtain some before attempting to reassemble my printer?
You need copper grease?
Nope, I don't think it is crucial.
If nothing else helps, I fear you need to disassemble the head and take out the filament by "hand". Be careful to not burn yourself.
Here is the link to the Ultimaker 2 assembly manual:
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