Update app.py

app.py

@@ -743,7 +743,7 @@ def process_segment_with_gpt(segment, source_lang, target_lang, model="gpt-4"):
     )
 
     try:
-        response = openai.ChatCompletion.create(
+        response = client.chat.completions.create(
             model=model,
             messages=[{"role": "user", "content": prompt}],
             temperature=0.3