Adobe Flash Player will officially reach the end of life on December 31st, 2020. Recent versions of the software include a kill switch that prevents Flash Player from loading Flash content starting on January 12th, 2021. It is now January 13th, and as Flash content no longer runs in Flash Player, it is time to uninstall the software. It may be possible to get Flash working again by installing a much older version of Flash Player but this will only open up your computer to security risks.
Source: https://www.bleepingcomputer.com/news/software/its-finally-over-time-to-uninstall-adobe-flash-player/