Error while initiating Carousal

[Abhay-cloud]

When I'm trying to run the app, then app crashes at runtime.
Carousal carousal = Carousal.with(MainActivity.this).beginTransaction();
Due to above line app is crashing.
Below is the logcat error:

Logcat:
java.lang.NoClassDefFoundError: Failed resolution of: Landroidx/appcompat/app/NotificationCompat$Builder;
at in.mamga.carousalnotification.Carousal.(Carousal.java:62)
at in.mamga.carousalnotification.Carousal.with(Carousal.java:75)
at com.codeddit.codeddittest.MainActivity.onCreate(MainActivity.java:27)
at android.app.Activity.performCreate(Activity.java:8309)
at android.app.Activity.performCreate(Activity.java:8291)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1359)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3812)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3997)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:85)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2380)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:257)
at android.app.ActivityThread.main(ActivityThread.java:8335)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:626)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1032)
Caused by: java.lang.ClassNotFoundException: Didn't find class "androidx.appcompat.app.NotificationCompat$Builder" on path: DexPathList[[zip file "/data/app/~~SCnLf5ncgG9VckRFKADJCg==/com.codeddit.codeddittest-UL_TeVn5PuNwPcgx1Sg-Fg==/base.apk"],nativeLibraryDirectories=[/data/app/~~SCnLf5ncgG9VckRFKADJCg==/com.codeddit.codeddittest-UL_TeVn5PuNwPcgx1Sg-Fg==/lib/arm64, /system/lib64, /system/system_ext/lib64]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:207)
at java.lang.ClassLoader.loadClass(ClassLoader.java:379)