Update app.py

app.py

@@ -177,7 +177,7 @@ def analyze_image(img, pdf, attributes):
         df = DataFromList(lst=[image])
         df = analyzer.analyze(dataset_dataflow=df)
     elif pdf:
-        df = analyzer.analyze(path=pdf.name, max_datapoints=3)
+        df = analyzer.analyze(path=pdf.name, max_datapoints=3, output="image")
     else:
         raise ValueError