Update app.py

app.py

@@ -519,7 +519,7 @@ class NutritionBot:
         # Initialize the OpenAI client using the provided credentials
         self.client = ChatOpenAI(
             model_name="gpt-4o-mini",  # Specify the model to use (e.g., GPT-4 optimized version)
-            api_key=os.environ["OPENAI_API_BASE"],  # API key for authentication
+            api_key=os.environ["API_KEY"],  # API key for authentication
             base_url = os.environ["OPENAI_API_BASE"],
             temperature=0  # Controls randomness in responses; 0 ensures deterministic results
         )