Getting this exception when installed latest version of firebased Messaging Service .

{Java.Lang.NoClassDefFoundError: Failed resolution of: Lorg/npci/upi/security/pinactivitycomponent/GetCredential; ---> Java.Lang.ClassNotFoundException: Didn't find class "org.npci.upi.security.pinactivitycomponent.GetCredential" on path: DexPathList[[zip file "/data/app/com.finacus.tranzapp-1/base.apk"],nativeLibraryDirectories=[/data/app/com.finacus.tranzapp-1/lib/arm, /data/app/com.finacus.tranzapp-1/base.apk!/lib/armeabi-v7a, /vendor/lib, /system/lib]]
--- End of inner exception stack trace ---
at Java.Interop.JniEnvironment+InstanceMethods.CallVoidMethod (Java.Interop.JniObjectReference instance, Java.Interop.JniMethodInfo method, Java.Interop.JniArgumentValue* args) [0x00069] in <286213b9e14c442ba8d8d94cc9dbec8e>:0
at Java.Interop.JniPeerMembers+JniInstanceMethods.InvokeVirtualVoidMethod (System.String encodedMember, Java.Interop.IJavaPeerable self, Java.Interop.JniArgumentValue* parameters) [0x0002a] in <286213b9e14c442ba8d8d94cc9dbec8e>:0
at Org.Npci.Upi.Security.Services.CLServices.GetCredential (System.String p0, System.String p1, System.String p2, System.String p3, System.String p4, System.String p5, System.String p6, System.String p7, Org.Npci.Upi.Security.Services.CLRemoteResultReceiver p8) [0x00130] in :0
at FinMobility.Droid.MainActivity.openUPILibray (FinMobility.DataService.Salt salt, FinMobility.DataService.PyaInfoData _payInfo, System.String deviceid, System.String mobileNo) [0x00f5f] in E:\Xamarin Projects\UPI\TranZappUPI 28th may 19 working - Copy\FinMobility\FinMobility.Droid\MainActivity.cs:603
--- End of managed Java.Lang.NoClassDefFoundError stack trace ---
java.lang.NoClassDefFoundError: Failed resolution of: Lorg/npci/upi/security/pinactivitycomponent/GetCredential;
at org.npci.upi.security.pinactivitycomponent.f.getCredential(Unknown Source)
at org.npci.upi.security.services.CLServices.getCredential(CLServices.java:130)
at md51558244f76c53b6aeda52c8a337f2c37.ButtonRenderer_ButtonClickListener.n_onClick(Native Method)
at md51558244f76c53b6aeda52c8a337f2c37.ButtonRenderer_ButtonClickListener.onClick(ButtonRenderer_ButtonClickListener.java:30)
at android.view.View.performClick(View.java:5273)
at android.view.View$PerformClick.run(View.java:21315)
at android.os.Handler.handleCallback(Handler.java:743)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:150)
at android.app.ActivityThread.main(ActivityThread.java:5665)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:822)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:712)
Caused by: java.lang.ClassNotFoundException: Didn't find class "org.npci.upi.security.pinactivitycomponent.GetCredential" on path: DexPathList[[zip file "/data/app/com.finacus.tranzapp-1/base.apk"],nativeLibraryDirectories=[/data/app/com.finacus.tranzapp-1/lib/arm, /data/app/com.finacus.tranzapp-1/base.apk!/lib/armeabi-v7a, /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)
... 13 more
Suppressed: java.lang.NoClassDefFoundError: org.npci.upi.security.pinactivitycomponent.GetCredential
at dalvik.system.DexFile.defineClassNative(Native Method)
at dalvik.system.DexFile.defineClass(DexFile.java:230)
at dalvik.system.DexFile.loadClassBinaryName(DexFile.java:223)
at dalvik.system.DexPathList.findClass(DexPathList.java:343)
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:54)
... 15 more
Suppressed: java.lang.ClassNotFoundException: org.npci.upi.security.pinactivitycomponent.GetCredential
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)
... 14 more
Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack trace available
}