Issue #3193795 by zengenuity: Update module to work with the latest version of Commerce

src/Plugin/Commerce/CheckoutPane/MultiplePaymentProcess.php

@@ -89,7 +89,14 @@ class MultiplePaymentProcess extends PaymentProcess {
       }
     }
     catch (NeedsRedirectException $e){
-      // This is fine.
+      // We could be redirecting from success or failure.
+      // Need to check if we're redirecting to the error step
+      $error_step_id = $this->getErrorStepId();
+
+      if($e->getTrace()[0]['args'][0] == $error_step_id) {
+        $this->reverseStagedPayments($staged_payments);
+        $this->redirectToPreviousStep(TRUE);
+      }
     }
     catch (\Error $e) {
       // If crash from main pane form processing, reverse payments and go back.