ID:15716 Pin <pin name> is missing an I/O standard assignment

CAUSE: The specified pin is missing an I/O standard assignment. If a slew rate assignment and/or a drive strength (current strength) assignment is specified, an I/O standard assignment must be specified as well.

ACTION: Using the Assignment Editor or the Pin Planner, add an I/O standard assignment. Alternatively, the slew rate assignment and/or a drive strength (current strength) assignment may be removed and the Quartus Prime software will choose the default settings for this pin.