Update app.py

app.py

@@ -12,6 +12,7 @@ from llama_index.llms import HuggingFaceLLM
 from langchain.embeddings import HuggingFaceEmbeddings, HuggingFaceInstructEmbeddings 
  
 from g4f import Provider, models
+
 from langchain.llms.base import LLM
 from llama_index.llms import LangChainLLM
 from langchain_g4f import G4FLLM
@@ -28,7 +29,7 @@ embed_model = HuggingFaceInstructEmbeddings(
 
 llm= LLM = G4FLLM(
         model=models.gpt_35_turbo,
-        provider=Provider.GPTalk,
+        provider=Provider.FreeGpt,
     )
 
 llm = LangChainLLM(llm=llm)