fix bug

app.py

@@ -40,7 +40,7 @@ def read_root():
     output_3 = pipe(image, question_3)
     
     response = {}
-    response['total amount'] = output_1.first['answer']
-    response['toal vat'] = output_2.first['answer']
-    response['date'] = output_3.first['answer']
+    response['total amount'] = output_1[0]['answer']
+    response['toal vat'] = output_2[0]['answer']
+    response['date'] = output_3[0]['answer']
     return response