White vertical line appeared automatically in my phone screen of Samsung M51 model. Please advise how to fix it

I bought the Samsung Gakaxy  M51 last year and so far it is good. All of sudden the display turns into black and it is working in back end. The screen gets turn on automatically after 2 mins. I am facing this for last 2 days. Is any one face this iss...

Phone display issue after using 7 months. Is anyone face the same issue?

No samsung pay in M51. Do you have any idea how to install it?