Amudhan_Sundararajan You have to give notification access permission. You must have seen a notification access request while opening the media player widget. I guess you refused the access.
hrry Anonymous443 Hi mate, he probably means by going to settings > notifications > Nothing Widgets and then enabling the correct permissions. Or alternatively settings > apps > Nothing Widgets. It was discussed here where the final comment provides a solution https://nothing.community/d/19078-media-widget-problem/10