Update app.py

app.py

@@ -41,7 +41,7 @@ def query_gpt4o_mini(query, images):
     """Calls OpenAI's GPT-4o-mini with the query and image data."""
     from openai import OpenAI
 
-    base64_images = [encode_image_to_base64(image) for image in images]
+    base64_images = [encode_image_to_base64(image[0]) for image in images]
     client = OpenAI(api_key=os.env.get("OPENAI_KEY"))
     PROMPT = """
     You are a smart assistant designed to answer questions about a PDF document.