ID:13872 VHDL error at <location>: can't read or update value of interface object "<name>" of mode LINKAGE

CAUSE: In a VHDL Design File (.vhd) at the specified location, you used an interface object of mode LINKAGE. However, Quartus Prime Integrated Synthesis cannot read or update the value of the interface object because you did not use the interface object as an actual for a formal interface object of mode LINKAGE.

ACTION: Make sure the interface object is an actual for a formal interface object, and that the mode of both interface objects is LINKAGE.