All VM can't start and the usb-sticks can't detected

I start my Qubes OS. It is all ok, but than it will not start the startup VMS (sys-usb, sys-net, sys-firewall). Then I will start it manually. Then I came the error: 'Qube sys-net has failed to Start: Logical Volume “vm-sys-net-volatile” already exists in volume group “qubes_dom0”. The USB-Sticks can’t detected, too.

How I can fix this error?

I hope for good tips and cooperation