java.lang.ClassCastException: android.support.v7.widget.AppCompatTextView cannot be cast to android.support.design.internal.SnackbarContentLayout

[HanteIsHante]

  Process: world.letsgo.booster.android.pro, PID: 21588
    java.lang.ClassCastException: android.support.v7.widget.AppCompatTextView cannot be cast to android.support.design.internal.SnackbarContentLayout
        at world.letsgo.booster.android.line.SelectLineFragment.showSnackBar(SelectLineFragment.kt:404)
        at world.letsgo.booster.android.line.SelectLineFragment.onClick(SelectLineFragment.kt:95)
        at android.view.View.performClick(View.java:4840)
        at android.view.View$PerformClick.run(View.java:19918)
        at android.os.Handler.handleCallback(Handler.java:739)
        at android.os.Handler.dispatchMessage(Handler.java:95)
        at android.os.Looper.loop(Looper.java:135)
        at android.app.ActivityThread.main(ActivityThread.java:5475)
        at java.lang.reflect.Method.invoke(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:372)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:948)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:743)