Unable to create new device

Hi Im’new to LoRa and i,M trying to add my first device. After clicking “Create device” i get information, that says something like: pq: column “variables” in realtion “device” doesn’t exist (code: 2)

The log says: “time=“2019-09-09T12:34:34+02:00” level=error msg=“finished unary call with code Unknown” error=“rpc error: code = Unknown desc = pq: kolumna “variables” relacji “device” nie istnieje” grpc.code=Unknown grpc.method=Create grpc.service=api.DeviceService grpc.start_time=“2019-09-09T12:34:34+02:00” grpc.time_ms=3.002 peer.address=”[::1]:50837" span.kind=server system=grpc"

Lora is running on Windows. I’m reading the documentation and similar topics, but still cannot found a solution…