ID:13904 VHDL error at <location>: can't update value of interface object "<name>" of mode IN

CAUSE: In a VHDL Design File (.vhd) at the specified location, you used an interface object of mode IN. However, Quartus Prime Integrated Synthesis cannot update the value of an interface object of mode IN.

ACTION: Change the mode of the interface object to OUT, INOUT, BUFFER, or LINKAGE. Make sure that all other requirements for updating the value of an interface object of mode OUT, INOUT, BUFFER, or LINKAGE are met.