Update app.py

app.py

@@ -35,7 +35,7 @@ def process_text(text_input, unit):
 
 def encode_image_to_base64(image_input):
     buffered = io.BytesIO()
-    image.save(buffered, format="JPEG")
+    image_input.save(buffered, format="JPEG")
     img_str = base64.b64encode(buffered.getvalue()).decode("utf-8")
     return img_str