Adding visual return when error

src/workflow/engine.py

@@ -181,4 +181,13 @@ class WorkflowEngine:
     Run the workflow and return all results as a list.
     Use this method when you need all results at once.
     """
-    return list(self.run())
+    try:
+      return list(self.run())
+    except DataProcessorError as err:
+      self.has_error = True
+      self.errors[err.component_id] = err.error
+      return []
+    except Exception as err:
+      self.has_error = True
+      self.global_error = str(err)
+      return []