LED ceiling fixture certain diodes blinking
I am wondering if it is something that I can fix?


See fixing a strobing LED driver ;-)


  Maybe replace that driver?


That will be easier. The main characteristics are a close match to the the constant-current rating - 500 mA and a voltage range that wholly encompasses the voltage range - 42 to 48 volts.

Before doing that, you can carefully measure the voltage across each of the LEDs or disconnect the LED panels from the fixture and test the LEDs individually in situ.