Hi, when starting the application, when it was already compiled, an exception occurs: Java.Lang.NoClassDefFoundError: Failed resolution of: Landroid/support/v7/appcompat/R$drawable. As I understand it, R$drawble means a style folder in which there are 4 styles, but their change did not lead to anything or I did not do it right?

These are the styles:

1.
    <selector xmlns:android="...">
        <item android:state_enabled="true" android:state_pressed="false">
            <shape android:shape="oval">
                <solid android:color="#00c853"/>
            </shape>
        </item>
        <item android:state_enabled="false">
            <shape android:shape="oval">
                <solid android:color="#bdf1d2"/>
            </shape>
        </item>
        <item android:state_pressed="true">
            <shape android:shape="oval">
                <solid android:color="#02903d"/>
            </shape>
        </item>
    </selector>
2.
    <shape xmlns:android="..."
    android:innerRadiusRatio="1"
  android:shape="rectangle" >

  <solid android:color="#d0ffffff" />
  <corners android:radius="8dp" />
  <stroke
        android:width="2dp"
        android:color="@color/white"/>
  <padding
          android:left="10dp"
          android:top="10dp"
          android:right="10dp"
          android:bottom="10dp" />
</shape>

3.
    <shape xmlns:android="...">
          <solid android:color="#D3D3D3" />
    </shape>    
4.
    <shape xmlns:android="..."
           android:shape="rectangle" >  
      <stroke
        android:width="2dp"
        android:color="#C6C6C6" />  
    </shape>    

Target build android version is that Nougat 7.1
android:targetSdkVersion="25"