I am having unused vouchers under Status: Captive portal: Voucher Rolls: Zone.
I am not sure where these vouchers went but I could either expire them all or just print them again.
Here’s what I did:
Download these two files below.
Note: Applied on PF 2.2.4 release. You can check which lines I added by comparing your original files and these ones. I use this site to compare scripts line by line.