[Q] Problems with preview render and override files in android studio for CM12 theme

Hi, i have couple of questions about theming cyanogenmod with android studio, I must say, i am novice and I don't understand some parts. First I install Android studio, Android SDK, JDK, and download all needed tools and packages for Android 5.x, Everything woks good i think, because i sucessful send my theme to mobile and override some parts od systemui. Only what I change was color, dimens, drawables, but i have some problems with layout override, in catlog show me error because I dont have source of some parts, but I dont know why is needed in theme when this sources are already in mobile in systemui, and if these source are not set/override in theme, may use original files. Another problem is with preview render, still show me errors eg.. , .. because I think these files are not in res folder but are in folder I am using this gradle template for theme https://github.com/cyngn/android_pac...hemes_Template. How can I fix these issues. Thanks.