About 50 miles into a 65 mile ride, I was headed into a hill, shifted into my small chainring and my front derailleur comes dislodged from my frame. After stopping, I see that the whole front hanger has pulled away from the frame (see pics), and is just dangling there by one screw... This bike is about 2 months old, with 5-600 miles on it, no reason for something like this to happen. So what do I do? It is still fully covered by a warranty, so that will not be a problem, but what is the actual process?

Please help.
Thanks!

I didn't find the right solution from the Internet.

References https://www.bikeforums.net/33-road-bike-racing/639836-major-bmc-problem-questions-about-warranty.html

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