If this customisation worked previously then you may need to check the standard things
- is the printer online and working for otherbthings
- if bartender is the users workstation setup correctly
- if bartender are the system printers setup correctly.
- if bartender is you integration working.
Just a few things to chec. Unfortunately we can’t see how the customisation works from. Here so we are trying to help with a shotgun approach.
Finally if using bartender you can use the history Explorer as a way of reprinting, and you get a preview of the label as well.
Oops and forgot if the customisation is using standard print functionality then you may see the report in system monitor.
You do not mention if this was in your live environment or not if not, and if the customisation writes out the file directly, then it might be an issue related to the Linux containers change.