badrequest error fix

app.py

@@ -58,17 +58,23 @@ def sanitize_script(script: str) -> str:
 
 def generate_podcast_script(subject: str, steering_question: str | None = None) -> str:
     """Ask the LLM for a script of a podcast given by two hosts."""
+    # Limit subject length to avoid exceeding model context window
+    max_subject_length = 4000
+    safe_subject = subject[:max_subject_length]
     messages = [
         {"role": "system", "content": SYSTEM_PROMPT},
-        {"role": "user", "content": f"""Here is the topic: it's the top trending paper on Hugging Face daily papers today. You will need to analyze it by bringing profound insights.\n{subject}"""},
+        {"role": "user", "content": f"""Here is the topic: it's the top trending paper on Hugging Face daily papers today. You will need to analyze it by bringing profound insights.\n{safe_subject}"""},
     ]
     if steering_question and len(steering_question) > 0:
         messages.append({"role": "user", "content": f"You could focus on this question: {steering_question}"})
-
-    response = client.chat_completion(
-        messages,
-        max_tokens=8156,
-    )
+    try:
+        response = client.chat_completion(
+            messages,
+            max_tokens=8156,
+        )
+    except Exception as e:
+        print(f"Error from chat_completion: {e}")
+        raise
     full_text = response.choices[0].message.content
     assert "[JANE]" in full_text
     dialogue_start_index = full_text.find("[JANE]")