i tried to update the number of points of specific user and i dont know why it is dont work.

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