add error message

Author: zhongkechen

sdk-integration-tests/src/test/java/software/amazon/lambda/durable/ParallelIntegrationTest.java

@@ -598,7 +598,10 @@ void testParallelWithMinSuccessful_earlyTermination() {
         });
 
         var result = runner.runUntilComplete("test");
-        assertEquals(ExecutionStatus.SUCCEEDED, result.getStatus());
+        assertEquals(
+                ExecutionStatus.SUCCEEDED,
+                result.getStatus(),
+                "Failed with error: " + result.getError().toString());
     }
 
     @Test