Update app.py

app.py

@@ -28,7 +28,7 @@ def extract_text(file):
 # ---- API embedding helper ----
 def get_embedding(text):
     payload = {"inputs": text}
-    resp = requests.post(API_URL, headers=HEADERS, json=payload, timeout=60)
+    resp = requests.post(API_URL, headers=headers, json=payload, timeout=60)
     data = resp.json()
     if isinstance(data, list) and "embedding" in data[0]:
         return np.array(data[0]["embedding"])