Lighting Grounding a Class 2 LED Driver ??? MW LPC-60-1400

Guys... what about grounding frame? I see some guys do that. I live in EU.
I wire like this: MW driver to power cord (red to red, yellow to yellow, black to black). Then power cord stick in the wall hole.
But... some guys wire third wire (wire like COB to COB) from both yellows to frame.

Guys, I also need opinion, please.
 
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