The machine will need to be disassembled to remove the broken tape.
If you are mechanically minded, you can attempt this yourself.
Alternatively, a local electronics repair shop can remove the tape for you.
Let me know your zip code and I can recommend a nearby repairer if necessary.
You will just need to remove all of the fastening screws and open the cover, then remove the tape.
It is a relatively straightforward disassembly and rebuild.