diff --git a/app/rag_chain.py b/app/rag_chain.py
index 7adc8c7..10c0030 100644
--- a/app/rag_chain.py
+++ b/app/rag_chain.py
@@ -5,6 +5,7 @@ from weaviate import Client
 from weaviate import WeaviateClient
 from weaviate.connect import ConnectionParams
 from weaviate.auth import AuthApiKey
+from weaviate.auth import AuthCredentials
 from weaviate.classes.init import Auth
 from langchain.vectorstores import Weaviate
 from langchain.chains import RetrievalQA
@@ -15,97 +16,58 @@ def build_rag_chain():
     # 1. Weaviate 클라이언트
     auth = weaviate.AuthApiKey(api_key="01js3q6y7twaxccm5dbh3se9bt")
 
-    # client = weaviate.connect_to_weaviate_cloud(cluster_url="http://183.111.96.67:32668", 
-    #                          auth_credentials=Auth.api_key("01js3q6y7twaxccm5dbh3se9bt"),
-    #                         headers={
-    #     "X-OpenAI-Api-Key": "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"  # 필요할 경우
-    # })
     OPENAI_API_KEY="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"
     
-    # client = Client(
-    #     connection_params=ConnectionParams.from_http(
-    #         host="183.111.96.67",   # 도메인 or IP
-    #         port=32668,             # 포트
-    #         secure=False,            # HTTP면 False, HTTPS면 True
-    #         auth_credentials=auth
-    #     )
-    # )
-
-    # connection_params = {
-    #     "http": {
-    #         "host": "183.111.96.67",
-    #         "port": 32668,
-    #         "secure": False
-    #     },
-    #     "grpc": {
-    #         "host": "183.111.96.67",
-    #         "port": 32619,
-    #         "secure": False
-    #     },
-    #     "auth_credentials": auth
+    # http_config = {
+    #     "host": "183.111.96.67",
+    #     "port": 32668,
+    #     "secure": False
+    # }
+    # grpc_config = {
+    #     "host": "183.111.96.67",
+    #     "port": 32619,
+    #     "secure": False
     # }
-    http_config = {
-        "host": "183.111.96.67",
-        "port": 32668,
-        "secure": False
-    }
-    grpc_config = {
-        "host": "183.111.96.67",
-        "port": 32619,
-        "secure": False
-    }
 
     # connection_params = ConnectionParams(
-    #     http=HttpConfig(
-    #         host="183.111.96.67",
-    #         port=32668,
-    #         secure=False),
-    #     grpc=GrpcConfig(
-    #         host="183.111.96.67",
-    #         port=32619,
-    #         secure=False),
-    #     auth_credentials=auth_config
+    #     http=http_config,
+    #     grpc=grpc_config,
+    #     auth_credentials=auth
     # )
 
-    connection_params = ConnectionParams(
-        http=http_config,
-        grpc=grpc_config,
-        auth_credentials=auth
-    )
-
-    client = WeaviateClient(connection_params=connection_params)
+    # client = WeaviateClient(connection_params=connection_params)
   
-    client2 = weaviate.connect_to_custom(
-        http_host="183.111.96.67",
-        http_port=32668,
-        grpc_host="183.111.96.67",
-        http_secure=False,
-        grpc_port=32619,
-        grpc_secure=False,
-        auth_credentials=auth,  # 인증이 필요 없으면 생략 가능
-        headers={"X-OpenAI-Api-Key": OPENAI_API_KEY}  # 필요시
-    )
+    # client2 = weaviate.connect_to_custom(
+    #     http_host="183.111.96.67",
+    #     http_port=32668,
+    #     grpc_host="183.111.96.67",
+    #     http_secure=False,
+    #     grpc_port=32619,
+    #     grpc_secure=False,
+    #     auth_credentials=auth,  # 인증이 필요 없으면 생략 가능
+    #     headers={"X-OpenAI-Api-Key": OPENAI_API_KEY}  # 필요시
+    # )
 
-    if client.is_ready():
-        print("Weaviate 연결 성공!")
-    else:
-        print("연결 실패. 서버 상태를 확인하세요.")
+    # if client.is_ready():
+    #     print("Weaviate 연결 성공!")
+    # else:
+    #     print("연결 실패. 서버 상태를 확인하세요.")
 
-    if client2.is_ready():
-        print("Weaviate 2 연결 성공!")
-    else:
-        print("연결 실패 2. 서버 상태를 확인하세요.")
+    # if client2.is_ready():
+    #     print("Weaviate 2 연결 성공!")
+    # else:
+    #     print("연결 실패 2. 서버 상태를 확인하세요.")
 
   
-    client3 = weaviate.connect_to_weaviate_cloud(
-        cluster_url="s4x71b3lt32z3md1ya0yw.c0.asia-southeast1.gcp.weaviate.cloud",  # 예: "http://183.111.96.67:32668"
-        auth_credentials=Auth.api_key("0ojxypfXy2Y1rKw3KQdBUtwcWSrYPWitE7Qu")  
-    )
+    # client3 = weaviate.connect_to_weaviate_cloud(
+    #     cluster_url="s4x71b3lt32z3md1ya0yw.c0.asia-southeast1.gcp.weaviate.cloud",  # 예: "http://183.111.96.67:32668"
+    #     auth_credentials=Auth.api_key("0ojxypfXy2Y1rKw3KQdBUtwcWSrYPWitE7Qu")  
+    # )
   
-    if client3.is_ready():
-        print("Weaviate 3 연결 성공!")
-    else:
-        print("연결 실패 3. 서버 상태를 확인하세요.")
+    # if client3.is_ready():
+    #     print("Weaviate 3 연결 성공!")
+    # else:
+    #     print("연결 실패 3. 서버 상태를 확인하세요.")
 
 
     # auth_key = AuthCredentials.api_key("01js3q6y7twaxccm5dbh3se9bt")  # 없으면 None
@@ -128,7 +90,8 @@ def build_rag_chain():
     else:
         print("연결 실패 4. 서버 상태를 확인하세요.")
 
-    legacy_client = weaviate.Client(connection_params=client4.connection_params)  # langchain용
+    import weaviate as legacy_weaviate
+    legacy_client = legacy_weaviate.Client(connection_params=client4.connection_params)  # langchain용
 
 
     # 2. 벡터스토어