feat: fix

main.py

@@ -9,8 +9,8 @@ from starlette.staticfiles import StaticFiles
 
 import routers
 from constants import API_ROOT
-from external.kafka import producer, consume_messages
-from external.kafka.producer import init_producer
+from external.kafka import consume_messages
+from external.kafka.producer import init_producer, get_producer
 
 origins = [
     'http://localhost:5173'
@@ -21,6 +21,7 @@ origins = [
 async def lifespan(app: FastAPI):
     try:
         await init_producer()
+        producer = await get_producer()
         if producer:
             await producer.start()
     except KafkaConnectionError as e:
@@ -29,6 +30,7 @@ async def lifespan(app: FastAPI):
     consumer_task = asyncio.create_task(consume_messages())
 
     yield
+    producer = await get_producer()
     if producer:
         await producer.stop()
     consumer_task.cancel()