Mikrotik Queue sync problem

[StarGate88]

Hi,

i have installed new version UISP 2.2.12 for testing, with mikrotik queue sync, but after setup plugin public.php write: Fatal error: Uncaught Error: Class "MikrotikQueueSync\Ip_In_Range" not found in /data/ucrm/data/plugins/mkt-queue-sync/classes/Synchronizer.php:68 Stack trace: #0 /data/ucrm/data/plugins/mkt-queue-sync/public.php(47): MikrotikQueueSync\Synchronizer->__construct() #1 /data/ucrm/data/plugins/mkt-queue-sync/public.php(49): {closure}() #2 /usr/src/ucrm/web/_plugins/mkt-queue-sync/public.php(3): require_once('/data/ucrm/data...') #3 {main} thrown in /data/ucrm/data/plugins/mkt-queue-sync/classes/Synchronizer.php on line 68

This is clean installation of UISP for testing, but i have configured one customer with one service and in nms with this paired device.

Wher is the problem please?