Need Help - Very huge percentage of ANRs and Crashes

Hello,
Our app have thousands of active users, and we just recently moved to Niotron and published a new update inside our app, but ANRs and Crash Rates has gone up the hill
I am publishing screenshots & stack trace if anyone can help us




1. java.lang.NoSuchMethodError
gnu.expr.PrimProcedure.apply

Stack Trace **
java.lang.NoSuchMethodError: **
** at com.google.appinventor.components.runtime.Label.JustifyContent (SourceFile:548)

** at java.lang.reflect.Method.invoke (Native Method)

** at gnu.expr.PrimProcedure.apply (PrimProcedure.java:285)**
** at gnu.mapping.CallContext.runUntilDone (CallContext.java:234)**
** at gnu.mapping.CallContext.runUntilValue (CallContext.java:298)**
** at gnu.expr.GenericProc.applyN (GenericProc.java:120)**
** at gnu.kawa.reflect.Invoke.applyN (Invoke.java:193)**
** at gnu.mapping.ProcedureN.apply3 (ProcedureN.java:48)**
** at com.google.youngandroid.runtime.$PcSetAndCoerceProperty$Ex (runtime6436636564640716916.scm:1365)**
** at com.google.youngandroid.runtime.setAndCoerceProperty$Ex (runtime6436636564640716916.scm:197)**
** at com.niotron.roasterearndeveloping.last.Login.lambda74 (Login.yail:381)**
** at com.niotron.roasterearndeveloping.last.Login$frame.apply0 (Login.yail:14)**
** at gnu.expr.ModuleBody.applyN (ModuleBody.java:226)**
** at com.niotron.roasterearndeveloping.last.Login$frame.applyN (Login.yail)**
** at gnu.expr.ModuleMethod.applyN (ModuleMethod.java:216)**
** at gnu.kawa.functions.ApplyToArgs.applyN (ApplyToArgs.java:139)**
** at gnu.mapping.ProcedureN.apply1 (ProcedureN.java:31)**
** at com.niotron.roasterearndeveloping.last.Login.$define (Login.yail:10274)**
** at com.google.appinventor.components.runtime.Form.a (SourceFile:398)**
** at com.google.appinventor.components.runtime.Form.onCreate (SourceFile:352)**
** at com.niotron.roasterearndeveloping.last.Login.onCreate (Login.yail:10005)**
** at android.app.Activity.performCreate (Activity.java:6904)**
** at android.app.Instrumentation.callActivityOnCreate (Instrumentation.java:1136)**
** at android.app.ActivityThread.performLaunchActivity (ActivityThread.java:3266)**
** at android.app.ActivityThread.handleLaunchActivity (ActivityThread.java:3415)**
** at android.app.ActivityThread.access$1100 (ActivityThread.java:229)**
** at android.app.ActivityThread$H.handleMessage (ActivityThread.java:1821)**
** at android.os.Handler.dispatchMessage (Handler.java:102)**
** at android.os.Looper.loop (Looper.java:148)**
** at android.app.ActivityThread.main (ActivityThread.java:7406)**
** at java.lang.reflect.Method.invoke (Native Method)**
** at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run (ZygoteInit.java:1230)**
** at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:1120)**

Stack Trace

java.lang.RuntimeException
java.lang.RuntimeException:
at android.app.ActivityThread.performPauseActivityIfNeeded (ActivityThread.java:5212)
at android.app.ActivityThread.performPauseActivity (ActivityThread.java:5163)
at android.app.ActivityThread.handlePauseActivity (ActivityThread.java:5114)
at android.app.servertransaction.PauseActivityItem.execute (PauseActivityItem.java:46)
at android.app.servertransaction.TransactionExecutor.executeLifecycleState (TransactionExecutor.java:176)
at android.app.servertransaction.TransactionExecutor.execute (TransactionExecutor.java:97)
at android.app.ActivityThread$H.handleMessage (ActivityThread.java:2307)
at android.os.Handler.dispatchMessage (Handler.java:106)
at android.os.Looper.loop (Looper.java:246)
at android.app.ActivityThread.main (ActivityThread.java:8512)
at java.lang.reflect.Method.invoke (Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run (RuntimeInit.java:602)
at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:1139)
Caused by: java.lang.IllegalArgumentException:
at android.app.LoadedApk.forgetReceiverDispatcher (LoadedApk.java:1523)
at android.app.ContextImpl.unregisterReceiver (ContextImpl.java:1712)
at android.content.ContextWrapper.unregisterReceiver (ContextWrapper.java:733)
at com.google.appinventor.components.runtime.NiotronNetworkTools.onPause (SourceFile:69)
at com.google.appinventor.components.runtime.Form.onPause (SourceFile:784)
at android.app.Activity.performPause (Activity.java:8383)
at android.app.Instrumentation.callActivityOnPause (Instrumentation.java:1510)
at android.app.ActivityThread.performPauseActivityIfNeeded (ActivityThread.java:5202)

Stack Trace

java.lang.NoSuchMethodError
java.lang.NoSuchMethodError:
at com.google.appinventor.components.runtime.Label.JustifyContent (SourceFile:548)
at java.lang.reflect.Method.invoke (Native Method)
at java.lang.reflect.Method.invoke (Method.java:372)
at gnu.expr.PrimProcedure.apply (PrimProcedure.java:285)
at gnu.mapping.CallContext.runUntilDone (CallContext.java:234)
at gnu.mapping.CallContext.runUntilValue (CallContext.java:298)
at gnu.expr.GenericProc.applyN (GenericProc.java:120)
at gnu.kawa.reflect.Invoke.applyN (Invoke.java:193)
at gnu.mapping.ProcedureN.apply3 (ProcedureN.java:48)
at com.google.youngandroid.runtime.$PcSetAndCoerceProperty$Ex (runtime6436636564640716916.scm:1365)
at com.google.youngandroid.runtime.setAndCoerceProperty$Ex (runtime6436636564640716916.scm:197)
at com.niotron.roasterearndeveloping.last.Login.lambda74 (Login.yail:381)
at com.niotron.roasterearndeveloping.last.Login$frame.apply0 (Login.yail:14)
at gnu.expr.ModuleBody.applyN (ModuleBody.java:226)
at com.niotron.roasterearndeveloping.last.Login$frame.applyN (Login.yail)
at gnu.expr.ModuleMethod.applyN (ModuleMethod.java:216)
at gnu.kawa.functions.ApplyToArgs.applyN (ApplyToArgs.java:139)
at gnu.mapping.ProcedureN.apply1 (ProcedureN.java:31)
at com.niotron.roasterearndeveloping.last.Login.$define (Login.yail:10274)
at com.google.appinventor.components.runtime.Form.a (SourceFile:398)
at com.google.appinventor.components.runtime.Form.onCreate (SourceFile:352)
at com.niotron.roasterearndeveloping.last.Login.onCreate (Login.yail:10005)
at android.app.Activity.performCreate (Activity.java:6178)
at android.app.Instrumentation.callActivityOnCreate (Instrumentation.java:1118)
at android.app.ActivityThread.performLaunchActivity (ActivityThread.java:2648)
at android.app.ActivityThread.handleLaunchActivity (ActivityThread.java:2769)
at android.app.ActivityThread.access$900 (ActivityThread.java:177)
at android.app.ActivityThread$H.handleMessage (ActivityThread.java:1430)
at android.os.Handler.dispatchMessage (Handler.java:102)
at android.os.Looper.loop (Looper.java:135)
at android.app.ActivityThread.main (ActivityThread.java:5910)
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)

Kindly always do internal testing before doing the app publicly available.

And it seems you have imported the app from other builders to niotron.

Hi,
The app was re-created from Kodu*** to Niotron, and all bugs & issues are happening to certain devices. We have thousands of players

Any help for identifying what causes these issues will be appreciated.

Most seems like happening to only certain players (devices).