Economies can work without currencies. It's a little inconvenient, but bartering/trading goods for services was common in the depression when nobody had any cash.
Printing money is lucrative for the printer so any time it might get even a little bit useful and feasible for other parties somebody will start printing.
https://www.armstrongeconomics.com/history/europes-economic-...
https://collectingpapermoney.spmc.org/wiki/Scrip_Issued_duri...