Error: nco_ii_0: Problem getting the aliases for all known families com.altera.infrastructure.devices.DeviceDBException:

Due to a problem in the Intel® Quartus® Prime Pro Edition software version 20.1, you may see the error message above in Platform Designer. This problem occurs when you generate HDL of NCO Intel® FPGA IP Core

To work around this problem you can generate the NCO Intel® FPGA IP in the Intel® Quartus® Prime Pro Edition software version 19.4 and use the v19.4 RTL files in Intel® Quartus® Prime Pro Edition software version 20.1.

This problem is fixed starting with the Intel® Quartus® Prime Pro Edition software version 20.2.