Update app.py

app.py

@@ -335,7 +335,7 @@ def instantiate_LLM(LLM_provider,api_key,temperature=0.5,top_p=0.95,model_name=N
     if LLM_provider == "OpenAI":
         llm = ChatOpenAI(
             api_key=api_key,
-            model=model_name, # in ["gpt-3.5-turbo", "gpt-3.5-turbo-0125", "gpt-4-turbo-preview"]
+            model="gpt-3.5-turbo", # in ["gpt-3.5-turbo", "gpt-3.5-turbo-0125", "gpt-4-turbo-preview"]
             temperature=temperature,
             model_kwargs={
                 "top_p": top_p
@@ -344,7 +344,7 @@ def instantiate_LLM(LLM_provider,api_key,temperature=0.5,top_p=0.95,model_name=N
     if LLM_provider == "Google":
         llm = ChatGoogleGenerativeAI(
             google_api_key=api_key,
-            model=gemini-pro, # "gemini-pro"
+            model="gemini-pro", # "gemini-pro"
             temperature=temperature,
             top_p=top_p,
             convert_system_message_to_human=True