Update chain_app.py

chain_app.py

@@ -24,7 +24,7 @@ groq_client = Groq(api_key=groq_api_key)
 co = cohere.Client(
   api_key=cohere_api_key,
 ) 
-NVIDIA_API_KEY = os.environ.get('NVIDIA_API_KEY')
+nvidia_api_key = os.environ.get('NVIDIA_API_KEY')
 
 # API_URL = "https://api-inference.huggingface.co/models/PartAI/TookaBERT-Large"
 # headers = {"Authorization": f"Bearer {hf_token}"}
@@ -2330,7 +2330,7 @@ async def main(message: cl.Message):
         # ).send()
         client = OpenAI(
           base_url = "https://integrate.api.nvidia.com/v1",
-          api_key = nvidia_api
+          api_key = nvidia_api_key
         )
         
         completion = client.chat.completions.create(