It's a dict, not an object

src/objectifier.py

@@ -116,7 +116,7 @@ def analyze_image(request: Request, image: UploadFile):
         str(outgoing_dir / (file_hash.hexdigest() + ".png")))
     remove(infile)
     result = result_to_dict(detect_result, base_url)
-    if not result.labels:
+    if not result["labels"]:
         # There were no objects detected
         remove(detect_result.outfile)
     return result