can't use it anymore on linux

[farvardin]

I've installed the udev rules and rebooter my computer. When I connect the ems cart on usb, I get this on dmesg:

[ 701.845271] usb 3-7: new full-speed USB device number 9 using xhci_hcd [ 701.972969] usb 3-7: New USB device found, idVendor=4670, idProduct=9394 [ 701.972975] usb 3-7: New USB device strings: Mfr=0, Product=0, SerialNumber=0

when I start ems-qart, I can't access the cart, the interface says it's not connected. When I click on "refresh", I get those errors in console:

qt5ct: using qt5ct plugin qrc:/qml/MainView.qml:416: TypeError: Cannot read property 'title' of null qrc:/qml/MainView.qml:422: TypeError: Cannot read property 'checksumValid' of null qrc:/qml/MainView.qml:453: TypeError: Cannot read property 'title' of null qrc:/qml/MainView.qml:459: TypeError: Cannot read property 'checksumValid' of null