GP20U7 GPS receiver


I am using a GP20U7 GPS receiver for my project. I am connecting this to a Arduino MKR 1000. Once I connect the device to Arduino, I am getting a USB Device not recognized error. Can someone help me why this error is coming. I connected the GP20u7's Vin to VCC of MKR 1000, GND to GND and TX pin to RX PIN of MKR 1000. Please help.