Update app.py

app.py

@@ -57,11 +57,14 @@ from urllib.parse import quote
 
 def fetch_wikipedia_link(topic: str) -> str | None:
     try:
-        # URL encode the topic
         encoded_topic = quote(topic)
         api_url = f"https://en.wikipedia.org/api/rest_v1/page/summary/{encoded_topic}"
 
-        response = requests.get(api_url, timeout=5)
+        headers = {
+            "User-Agent": "QuizBot/1.0 (https://huggingface.co/your-space) Python/3.x"
+        }
+
+        response = requests.get(api_url, headers=headers, timeout=5)
 
         if response.status_code != 200:
             st.error(f"Failed to fetch Wikipedia content for '{topic}' (status {response.status_code})")