This is most probably a driver bug, as the job prints correctly on your Brother printer. Therefore the application and the CUPS filters seem to do their part correctly.
So the problem is probably that the driver (foo2lava, package: foo2zjs) sends something to the printer which makes it crash or block so that it does not accept further data. The driver itself does not crash, it converts the complete job and foomatic-rip closes successfully. The backend closes with an error before the the end of the job is reached as the printer stops accepting further data.
This is most probably a driver bug, as the job prints correctly on your Brother printer. Therefore the application and the CUPS filters seem to do their part correctly.
So the problem is probably that the driver (foo2lava, package: foo2zjs) sends something to the printer which makes it crash or block so that it does not accept further data. The driver itself does not crash, it converts the complete job and foomatic-rip closes successfully. The backend closes with an error before the the end of the job is reached as the printer stops accepting further data.
Moving the bug to the foo2zjs package ...