Update app.py

app.py

@@ -23,15 +23,23 @@ class GPT5Model:
             "prompt": full_prompt,
             "max_tokens": 500
         }
-        response = requests.post("https://api.pplx.ai/v1/generate", json=data, headers=headers)
+
+        try:
+            response = requests.post("https://api.pplx.ai/v1/generate", json=data, headers=headers, timeout=15)
+        except requests.exceptions.RequestException as e:
+            return f"Error: Could not reach API. {e}"
 
         if response.status_code != 200:
-            return f"Error: {response.text}"
+            return f"Error: API key exhausted or invalid. ({response.status_code})"
 
         try:
-            return response.json()["choices"][0]["text"].strip()
-        except Exception as e:
-            return f"Error parsing response: {e}"
+            result = response.json()
+            choices = result.get("choices", [])
+            if not choices or "text" not in choices[0] or not choices[0]["text"].strip():
+                return "Error: API key exhausted or invalid."
+            return choices[0]["text"].strip()
+        except Exception:
+            return "Error: API key exhausted or invalid."
 
 # -----------------------------
 # Load API key
@@ -79,4 +87,3 @@ with gr.Blocks(css="""
     txt.submit(respond, [txt, chatbot], [txt, chatbot])
 
 demo.launch()
-