fix npe on fee rates selection toggle

drongo

@@ -1 +1 @@
-Subproject commit a56f8971c022192dbce0dfc5da3c417b605e4b4f
+Subproject commit 891499aff04b69f53bf143464001b96b44a0ec53

src/main/java/com/sparrowwallet/sparrow/wallet/SendController.java

@@ -286,9 +286,11 @@ public class SendController extends WalletFormController implements Initializabl
         updateFeeRateSelection(feeRatesSelection);
         feeSelectionToggleGroup.selectToggle(feeRatesSelection == FeeRatesSelection.BLOCK_TARGET ? targetBlocksToggle : mempoolSizeToggle);
         feeSelectionToggleGroup.selectedToggleProperty().addListener((observable, oldValue, newValue) -> {
-            FeeRatesSelection newFeeRatesSelection = (FeeRatesSelection)newValue.getUserData();
+            if(newValue != null) {
-            Config.get().setFeeRatesSelection(newFeeRatesSelection);
+                FeeRatesSelection newFeeRatesSelection = (FeeRatesSelection)newValue.getUserData();
-            EventManager.get().post(new FeeRatesSelectionChangedEvent(getWalletForm().getWallet(), newFeeRatesSelection));
+                Config.get().setFeeRatesSelection(newFeeRatesSelection);
+                EventManager.get().post(new FeeRatesSelectionChangedEvent(getWalletForm().getWallet(), newFeeRatesSelection));
+            };
         });
 
         fee.setTextFormatter(new CoinTextFormatter());