Program: 165041
Project: 165041
Buggy source:
/** 
 * Starts the Checkout With PayPal flow. This will launch the PayPal app if installed or switch to the browser for user authorization.
 * @param fragment A {@link BraintreeFragment} used to process the request.
 * @param checkout A {@link PayPalCheckout} used to customize the request.
 * @param isBillingAgreement A boolean. If true, this will use the Billing Agreement. Otherwise,PayPal will perform a Single Payment.
 */
private static void checkout(final BraintreeFragment fragment,final PayPalCheckout checkout,final boolean isBillingAgreement){
  sBraintreeFragmentBroadcastReceiver.setFragment(fragment);
  BraintreeBroadcastManager.getInstance(fragment.getContext()).registerReceiver(sBraintreeFragmentBroadcastReceiver,new IntentFilter(BraintreeBrowserSwitchActivity.LOCAL_BROADCAST_BROWSER_SWITCH_COMPLETED));
  HttpResponseCallback callback=new HttpResponseCallback(){
    @Override public void success(    String responseBody){
      final PayPalPaymentResource paypalPaymentResource;
      try {
        paypalPaymentResource=PayPalPaymentResource.fromJson(responseBody);
      }
 catch (      JSONException e) {
        fragment.postCallback(e);
        Log.d("String_Node_Str","String_Node_Str");
        return;
      }
      try {
        sPendingRequest=buildPayPalCheckoutConfiguration(paypalPaymentResource.getRedirectUrl(),fragment.getActivity(),fragment.getConfiguration());
        sPendingRequestStatus=PayPalOneTouchCore.performRequest(fragment.getActivity(),sPendingRequest,PAYPAL_AUTHORIZATION_REQUEST_CODE,sEnableSignatureVerification,new BrowserSwitchAdapter(){
          @Override public void handleBrowserSwitchIntent(          Intent intent){
            fragment.getActivity().startActivityForResult(new Intent(fragment.getActivity(),BraintreeBrowserSwitchActivity.class).setFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION).putExtra(BraintreeBrowserSwitchActivity.EXTRA_INTENT,intent),PAYPAL_AUTHORIZATION_REQUEST_CODE);
          }
        }
);
        sendAnalyticsForPayPalPerformRequestStatus(fragment,sPendingRequestStatus,true);
      }
 catch (      ConfigurationException e) {
        fragment.postCallback(e);
      }
    }
    @Override public void failure(    Exception e){
      fragment.postCallback(e);
      ErrorWithResponse ex=(ErrorWithResponse)e;
      try {
        JSONObject response=new JSONObject(ex.getErrorResponse());
        String debugId=response.getJSONObject("String_Node_Str").getString("String_Node_Str");
        Log.d("String_Node_Str","String_Node_Str" + debugId);
      }
 catch (      JSONException jsonException) {
        Log.d("String_Node_Str","String_Node_Str");
      }
    }
  }
;
  try {
    createPayPalPaymentResource(fragment,checkout,isBillingAgreement,callback);
  }
 catch (  JSONException|ErrorWithResponse|BraintreeException ex) {
    fragment.postCallback(ex);
  }
}

Fixed version (ground truth):
/** 
 * Starts the Checkout With PayPal flow. This will launch the PayPal app if installed or switch to the browser for user authorization.
 * @param fragment A {@link BraintreeFragment} used to process the request.
 * @param checkout A {@link PayPalCheckout} used to customize the request.
 * @param isBillingAgreement A boolean. If true, this will use the Billing Agreement. Otherwise,PayPal will perform a Single Payment.
 */
private static void checkout(final BraintreeFragment fragment,final PayPalCheckout checkout,final boolean isBillingAgreement){
  sBraintreeFragmentBroadcastReceiver.setFragment(fragment);
  BraintreeBroadcastManager.getInstance(fragment.getApplicationContext()).registerReceiver(sBraintreeFragmentBroadcastReceiver,new IntentFilter(BraintreeBrowserSwitchActivity.LOCAL_BROADCAST_BROWSER_SWITCH_COMPLETED));
  HttpResponseCallback callback=new HttpResponseCallback(){
    @Override public void success(    String responseBody){
      final PayPalPaymentResource paypalPaymentResource;
      try {
        paypalPaymentResource=PayPalPaymentResource.fromJson(responseBody);
      }
 catch (      JSONException e) {
        fragment.postCallback(e);
        Log.d("String_Node_Str","String_Node_Str");
        return;
      }
      try {
        sPendingRequest=buildPayPalCheckoutConfiguration(paypalPaymentResource.getRedirectUrl(),fragment.getActivity(),fragment.getConfiguration());
        sPendingRequestStatus=PayPalOneTouchCore.performRequest(fragment.getActivity(),sPendingRequest,PAYPAL_AUTHORIZATION_REQUEST_CODE,sEnableSignatureVerification,new BrowserSwitchAdapter(){
          @Override public void handleBrowserSwitchIntent(          Intent intent){
            fragment.getActivity().startActivityForResult(new Intent(fragment.getActivity(),BraintreeBrowserSwitchActivity.class).setFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION).putExtra(BraintreeBrowserSwitchActivity.EXTRA_INTENT,intent),PAYPAL_AUTHORIZATION_REQUEST_CODE);
          }
        }
);
        sendAnalyticsForPayPalPerformRequestStatus(fragment,sPendingRequestStatus,true);
      }
 catch (      ConfigurationException e) {
        fragment.postCallback(e);
      }
    }
    @Override public void failure(    Exception e){
      fragment.postCallback(e);
      ErrorWithResponse ex=(ErrorWithResponse)e;
      try {
        JSONObject response=new JSONObject(ex.getErrorResponse());
        String debugId=response.getJSONObject("String_Node_Str").getString("String_Node_Str");
        Log.d("String_Node_Str","String_Node_Str" + debugId);
      }
 catch (      JSONException jsonException) {
        Log.d("String_Node_Str","String_Node_Str");
      }
    }
  }
;
  try {
    createPayPalPaymentResource(fragment,checkout,isBillingAgreement,callback);
  }
 catch (  JSONException|ErrorWithResponse|BraintreeException ex) {
    fragment.postCallback(ex);
  }
}