The return value of `send_printing_job` was not correcty formated for the ePOS printers so the POS showed an error even though the receipt was correctly printed. closes odoo/odoo#57051 X-original-commit: 827c8d0b257d027504df1acf469d6c4761603550 Signed-off-by: pimodoo <pimodoo@users.noreply.github.com> Signed-off-by: Antoine Prieëls <aprieels@users.noreply.github.com>