Update app.py

app.py

@@ -63,7 +63,7 @@ def image_qa(image: str, question: str) -> str:
         question: A string representing the question being asked.
     """
     pipe = pipeline("visual-question-answering", model="dandelin/vilt-b32-finetuned-vqa")
-    answer = pipe(document, question)
+    answer = pipe(image, question)
     return answer[0]['answer']
 
 @tool