Arria 10 clock problem

Hi, you will get this error might due to you have constrained an I/O pin or group of pins to a location, bank, or region that could not support the required I/O standard.

You have to make sure that you have not assigned pins requiring a particular I/O standard to banks that do not support the standard, and that you have not constrained too many I/O pins requiring a particular voltage to a region that does not have enough I/O pin locations capable of supporting the selected voltage.