diff --git a/pilot/embedding_engine/source_embedding.py b/pilot/embedding_engine/source_embedding.py
index b99529cf9..372e35c22 100644
--- a/pilot/embedding_engine/source_embedding.py
+++ b/pilot/embedding_engine/source_embedding.py
@@ -33,9 +33,6 @@ class SourceEmbedding(ABC):
         self.vector_store_config = vector_store_config
         self.embedding_args = embedding_args
         self.embeddings = vector_store_config["embeddings"]
-        self.vector_client = VectorStoreConnector(
-            CFG.VECTOR_STORE_TYPE, vector_store_config
-        )
 
     @abstractmethod
     @register
@@ -59,11 +56,17 @@ class SourceEmbedding(ABC):
     @register
     def index_to_store(self, docs):
         """index to vector store"""
-        return self.vector_client.load_document(docs)
+        self.vector_client = VectorStoreConnector(
+            CFG.VECTOR_STORE_TYPE, self.vector_store_config
+        )
+        self.vector_client.load_document(docs)
 
     @register
     def similar_search(self, doc, topk):
         """vector store similarity_search"""
+        self.vector_client = VectorStoreConnector(
+            CFG.VECTOR_STORE_TYPE, self.vector_store_config
+        )
         try:
             ans = self.vector_client.similar_search(doc, topk)
         except NotEnoughElementsException:
@@ -71,6 +74,9 @@ class SourceEmbedding(ABC):
         return ans
 
     def vector_name_exist(self):
+        self.vector_client = VectorStoreConnector(
+            CFG.VECTOR_STORE_TYPE, self.vector_store_config
+        )
         return self.vector_client.vector_name_exists()
 
     def source_embedding(self):
diff --git a/pilot/server/webserver.py b/pilot/server/webserver.py
index 0866e8be9..b6c1e2cc3 100644
--- a/pilot/server/webserver.py
+++ b/pilot/server/webserver.py
@@ -297,39 +297,29 @@ def http_bot(
 
     if ChatScene.ChatWithDbExecute == scene:
         chat_param = {
-            "temperature": temperature,
-            "max_new_tokens": max_new_tokens,
             "chat_session_id": state.conv_id,
             "db_name": db_selector,
             "user_input": state.last_user_input,
         }
     elif ChatScene.ChatWithDbQA == scene:
         chat_param = {
-            "temperature": temperature,
-            "max_new_tokens": max_new_tokens,
             "chat_session_id": state.conv_id,
             "db_name": db_selector,
             "user_input": state.last_user_input,
         }
     elif ChatScene.ChatExecution == scene:
         chat_param = {
-            "temperature": temperature,
-            "max_new_tokens": max_new_tokens,
             "chat_session_id": state.conv_id,
             "plugin_selector": plugin_selector,
             "user_input": state.last_user_input,
         }
     elif ChatScene.ChatNormal == scene:
         chat_param = {
-            "temperature": temperature,
-            "max_new_tokens": max_new_tokens,
             "chat_session_id": state.conv_id,
             "user_input": state.last_user_input,
         }
     elif ChatScene.ChatDefaultKnowledge == scene:
         chat_param = {
-            "temperature": temperature,
-            "max_new_tokens": max_new_tokens,
             "chat_session_id": state.conv_id,
             "user_input": state.last_user_input,
         }
@@ -341,8 +331,6 @@ def http_bot(
         }
     elif ChatScene.ChatUrlKnowledge == scene:
         chat_param = {
-            "temperature": temperature,
-            "max_new_tokens": max_new_tokens,
             "chat_session_id": state.conv_id,
             "user_input": state.last_user_input,
             "url": url_input,
diff --git a/tools/knowledge_init.py b/tools/knowledge_init.py
index 752cf18d0..66285a784 100644
--- a/tools/knowledge_init.py
+++ b/tools/knowledge_init.py
@@ -49,6 +49,7 @@ class LocalKnowledgeInit:
         space = KnowledgeSpaceRequest
         space.name = self.vector_store_config["vector_store_name"]
         space.desc = "knowledge_init.py"
+        space.vector_type = CFG.VECTOR_STORE_TYPE
         space.owner = "DB-GPT"
         knowledge_space_service.create_knowledge_space(space)