Fix syntax error: global variable declaration in api_mental_health.py

api_mental_health.py

@@ -150,16 +150,11 @@ async def startup_event():
                     disallowed_special=(), 
                     chunk_size=1000  
                 )
-                global vector_store
-                try:
-                    vector_store = Chroma(
-                        client=chroma_client,
-                        collection_name="mental_health_conversations",
-                        embedding_function=embeddings
-                    )
-                except Exception as chroma_error:
-                    logger.warning(f"Error initializing Chroma collection: {chroma_error}")
-                    vector_store = None
+                vector_store = Chroma(
+                    client=chroma_client,
+                    collection_name="mental_health_conversations",
+                    embedding_function=embeddings
+                )
             else:
                 logger.warning("Skipping ChromaDB initialization as OPENAI_API_KEY is not set")
                 vector_store = None
@@ -169,7 +164,6 @@ async def startup_event():
 
     # Initialize OpenAI client and LLM if API key is available
     logger.info("Initializing OpenAI client and LLM")
-    global openai_client, llm
     if os.environ.get("OPENAI_API_KEY"):
         try:
             openai_client = OpenAI(api_key=os.environ["OPENAI_API_KEY"])