implementation "androidx.navigation:navigation-fragment:$nav_version"
implementation "androidx.navigation:navigation-ui:$nav_version"
implementation 'androidx.appcompat:appcompat:1.3.0-rc01'
implementation "androidx.navigation:navigation-fragment:$nav_version"
implementation "androidx.navigation:navigation-ui:$nav_version"
implementation 'androidx.appcompat:appcompat:1.3.0-rc01'