iPhone 6s replacement home button not working

My iPhone 6s's screen and home button are faulty. I ordered a third party replacement home button and screen from a different website. While replacing the screen, I accidentally ripped off the front camera flex cable (listed on step 22 of the iPhone 6s screen replacement guide on iFixit) while taking it out, but I kept on going with the repair. When I tested the phone out, the screen worked perfectly, but neither Touch ID nor the home button's actual functionality did not work. My question is if this is because of the front camera flex cable I broke earlier, or if it is something else. Thank you!