problem class not found

hi i'm having this exception and i dont realy understand the reason behind it .I only copyet the code and converted in kotlin .
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.internship.ahmedaj.stagepfe/com.internship.ahmedaj.stagepfe.MainActivity}: java.lang.RuntimeException: Unable to find Class for com.internship.ahmedaj.stagepfe.TinderCard PLEASE ADD >> annotationProcessor 'com.mindorks.android:placeholderview-compiler:<LATEST-VERSION>' << in build.gradle at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2656) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2721) at android.app.ActivityThread.access$900(ActivityThread.java:168) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1393) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:135) at android.app.ActivityThread.main(ActivityThread.java:5753) at java.lang.reflect.Method.invoke(Native Method) at java.lang.reflect.Method.invoke(Method.java:372) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1405) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1200) Caused by: java.lang.RuntimeException: Unable to find Class for com.internship.ahmedaj.stagepfe.TinderCard PLEASE ADD >> annotationProcessor 'com.mindorks.android:placeholderview-compiler:<LATEST-VERSION>' << in build.gradle at com.mindorks.placeholderview.Binding.getBinderInstance(Binding.java:44) at com.mindorks.placeholderview.Binding.bindSwipeDirectionalViewResolver(Binding.java:74) at com.mindorks.placeholderview.SwipeDirectionalView.getViewBinder(SwipeDirectionalView.java:64) at com.mindorks.placeholderview.SwipePlaceHolderView.addView(SwipePlaceHolderView.java:211) at com.internship.ahmedaj.stagepfe.MainActivity.onCreate(MainActivity.kt:50) at android.app.Activity.performCreate(Activity.java:6112) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1117) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2609) ... 10 more Caused by: java.lang.ClassNotFoundException: Didn't find class "com.internship.ahmedaj.stagepfe.TinderCard$DirectionalViewBinder" on path: DexPathList[[zip file "/data/app/com.internship.ahmedaj.stagepfe-2/base.apk"],nativeLibraryDirectories=[/vendor/lib, /system/lib]] at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56) at java.lang.ClassLoader.loadClass(ClassLoader.java:511) at java.lang.ClassLoader.loadClass(ClassLoader.java:469) at com.mindorks.placeholderview.Binding.getBinderInstance(Binding.java:25) ... 17 more Suppressed: java.lang.ClassNotFoundException: com.internship.ahmedaj.stagepfe.TinderCard$DirectionalViewBinder at java.lang.Class.classForName(Native Method) at java.lang.BootClassLoader.findClass(ClassLoader.java:781) at java.lang.BootClassLoader.loadClass(ClassLoader.java:841) at java.lang.ClassLoader.loadClass(ClassLoader.java:504) ... 19 more Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack available
@adjmiahmed Just rebuild the project
@adjmiahmed Upgrade the library to 1.0.1