ID:15715 One or more pins are missing I/O standard assignments

CAUSE: There are one or more pins with missing I/O standard assignments. If the slew rate assignments and/or the drive strength (current strength) assignments are specified, then the I/O standard assignments must be specified as well.

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