ID:203015 Can't generate greybox netlist file because the greybox netlist file name "<name>" has a file extension ".vqm" which is not a valid file extension for a greybox netlist file name

CAUSE: The Quartus Prime software cannot generate the greybox file because the greybox netlist file name cannot have a Verilog Quartus Mapping File (.vqm) extension.

ACTION: Execute the command again by changing the extension of the file name from a .vqm file extension to any other valid file extension, such as a Verilog Output File (.vo) extension.