SDK 4.0.0 upgrade - Githubissues

We have recently update the SDK to 4.0.0 and this what we get when transaction is SUCCESS. This is causing a huge outrage in our application. Please let us know what wrong here?

Fatal Exception: java.lang.IllegalArgumentException: Parameter specified as non-null is null: method kotlin.jvm.internal.Intrinsics.checkParameterIsNotNull, parameter text
       at com.sumup.designlib.circuitui.components.SumUpTextField.setText(:2)
       at com.sumup.merchant.reader.ui.fragments.TxSuccessFragment$1.setPhoneNumber(SourceFile:1)
       at com.sumup.merchant.reader.presenter.ReceiptPresenter.populateFieldsFromApi(SourceFile:4)
       at com.sumup.merchant.reader.ui.fragments.TxSuccessFragment.onActivityCreated(SourceFile:31)
       at androidx.fragment.app.Fragment.performActivityCreated(Fragment.java:2996)
       at androidx.fragment.app.FragmentStateManager.activityCreated(FragmentStateManager.java:580)
       at androidx.fragment.app.FragmentStateManager.moveToExpectedState(FragmentStateManager.java:285)
       at androidx.fragment.app.FragmentManager.executeOpsTogether(FragmentManager.java:2189)
       at androidx.fragment.app.FragmentManager.removeRedundantOperationsAndExecute(FragmentManager.java:2100)
       at androidx.fragment.app.FragmentManager.execPendingActions(FragmentManager.java:2002)
       at androidx.fragment.app.FragmentManager$5.run(FragmentManager.java:524)
       at android.os.Handler.handleCallback(Handler.java:938)
       at android.os.Handler.dispatchMessage(Handler.java:99)
       at android.os.Looper.loopOnce(Looper.java:226)
       at android.os.Looper.loop(Looper.java:313)
       at android.app.ActivityThread.main(ActivityThread.java:8669)
       at java.lang.reflect.Method.invoke(Method.java)
       at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:571)
       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1135)

While taking payment this is what we do,

 SumUpPayment payment = SumUpPayment.builder()
                        // mandatory parameters
                        .total(new BigDecimal(amount))
                        .currency(SumUpPayment.Currency.GBP)
                        .title("Job " + localId)
                        .build();
SumUpAPI.checkout(uiContext.get(), payment, REQUEST_CODE_PAYMENT);

sumup / sumup-android-sdk

SDK 4.0.0 upgrade #193