https://support.google.com/pixelphone/answer/11833075?hl=en
This just happened to me after 1.5 years of usage of my Pixel 5A.
Luckily Google extended the usual 1-year warranty to be 2-years to give free replacements (which I took advantage of and in fact was given a free upgrade to a 6A)... But be prepared for your phone to die out of nowhere.