Solved trouble with Brother QL-800

[Bansher]

I was have trouble printing on Brother QL-800. On output i was have only blinking red light. For fixing, you need change next files:
/var/www/html/unifi-voucher-service/uvs_config.php - set Optional changes
$uvs_printer = 'QL-800';
$uvs_labelsize = '62';
$uvs_usbid = 'your parameters from lsusb';
In /var/www/html/unifi-voucher-service/codes all files in section "Collect all information and send the print information" you need add --red before /var/www/html/

Only in this way I solved my problem :)