update chunk extraction code

app.py

@@ -76,7 +76,7 @@ def predict(inputs, top_p, temperature, openai_api_key, chat_counter, chatbot=[]
         if chunk.decode() :
           chunk = chunk.decode()
           # decode each line as response data is in bytes
-          if len(chunk) > 6 and "delta" in json.loads(chunk[6:])['choices'][0]:
+          if len(chunk) > 12 and "delta" in json.loads(chunk[6:])['choices'][0]:
               #if len(json.loads(chunk.decode()[6:])['choices'][0]["delta"]) == 0:
               #  break
               partial_words = partial_words + json.loads(chunk.decode()[6:])['choices'][0]["delta"]["content"]