output hwi signing exception to log

src/main/java/com/sparrowwallet/sparrow/control/DevicePane.java

@@ -625,7 +625,7 @@ public class DevicePane extends TitledDescriptionPane {
         });
         signPSBTService.setOnFailed(workerStateEvent -> {
             setError("Signing Error", signPSBTService.getException().getMessage());
-            log.error("Signing Error: " + signPSBTService.getException().getMessage());
+            log.error("Signing Error: " + signPSBTService.getException().getMessage(), signPSBTService.getException());
             signButton.setDisable(false);
         });
         setDescription("Signing...");

src/main/java/com/sparrowwallet/sparrow/io/Hwi.java

@@ -220,7 +220,7 @@ public class Hwi {
         } catch(IOException e) {
             throw new SignTransactionException("Could not sign PSBT", e);
         } catch(PSBTParseException e) {
-            throw new SignTransactionException("Could not parsed signed PSBT", e);
+            throw new SignTransactionException("Could not parse signed PSBT", e);
         } finally {
             isPromptActive = false;
         }