Why is my sidebar activity not rendering?

Question

Java

It gives this error, while it compiles and runs normally on the device. As I understand it, the key line is: Failed to find style 'toolbarStyle' in current theme (8 similar errors not shown)

Rendering Problems Missing styles. Is the correct theme chosen for this layout? Use the Theme combo box above the layout to choose a different layout, or fix the theme style references. NOTE: One or more layouts are missing the layout_width or layout_height attributes. These are required in most layouts. Or: Automatically add all missing attributes The following classes could not be instantiated:
- android.support.design.widget.NavigationView (Open Class, Show Exception, Clear Cache)
Tip: Use View.isInEditMode() in your custom views to skip code or show sample data when shown in the IDE in current configuration. at android.content.res.Resources_Delegate.throwException(Resources_Delegate.java:913) at android.content.res.Resources_Delegate.throwException(Resources_Delegate.java:900) ) at android.content.res.Resources.getBoolean(Resources.java:1024) at android.support.v7.view.menu.MenuBuilder.setShortcutsVisibleInner(MenuBuilder.java:790) at android.support.v7.view.menu. MenuBuilder.(MenuBuilder.java:227) at android.support.design.internal.