add changes

arkindex_worker/worker/__init__.py

@@ -212,7 +212,10 @@ class ElementsWorker(
                 element_id = element.id if element else item
 
                 if isinstance(e, ErrorResponse):
-                    message = f"An API error occurred while processing element {element_id}: {e.title} - {e.content}"
+                    if e.title == "404 Not Found":
+                        message = f"An API error occurred while processing element {element_id}: ARKINDEX_CORPUS_ID was not set in the environment"
+                    else:
+                        message = f"An API error occurred while processing element {element_id}: {e.title} - {e.content}"
                 else:
                     message = (
                         f"Failed running worker on element {element_id}: {repr(e)}"