PYNQ failed to open /dev/xlnk

I compiled PYNQ2.4 for the AX7Z100 development board, and when writing to the SD card, I must replace the boot.bin and image.ub in PYNQ with those in the original factory provided ZYNQ image to successfully boot the board.

When I try to run various programs through PYNQ, I always get the error
‘failed to open/dev/xlnk’,
and there is no xlnk in the dev folder.

Is there any solution?

Or is there a way to manually create devices/dev/xlnk