I was making a project when suddenly xmlns:app=”http://schemas.android.com/apk/res-auto” became gray and render problem occurred. Here are the screenshots, please help me. I will post more screenshots if necessarythe line was already grayed out in this new activityhere is my manifestmy night theme which was also grayed out that line my default themeand the error message

Please help, i dont know what to do

I tried searching in youtube and here for solutions but none are working since my problem was different from what i have seen from others