simple error

Hi,

I am getting an error:

Error: Input port datain of the GXB receiver channel PMA atom

"" must be connected to an input pin

I am trying to use an PCIe-x1 core with 1 lane and not the PCIe-4 core with 4 lanes. The Quartus is not permitting it by saying that the other 3 lanes are unconnected. Can any one help me on that?

Thanks in advance for helping

Best regards

kenny