diff --git a/metagpt/actions/search_and_summarize.py b/metagpt/actions/search_and_summarize.py
index 7bff1c113..aa4d0f654 100644
--- a/metagpt/actions/search_and_summarize.py
+++ b/metagpt/actions/search_and_summarize.py
@@ -117,19 +117,18 @@ class SearchAndSummarize(Action):
 
     @root_validator
     def validate_engine_and_run_func(cls, values):
-        engine = values.get('engine')
-        search_func = values.get('search_func')
+        engine = values.get("engine")
+        search_func = values.get("search_func")
         config = Config()
         
         if engine is None:
             engine = config.search_engine
-        config_data = {
-                'engine': engine,
-                'run_func': search_func
-        }
-        search_engine = SearchEngine(**config_data)
+        try:
+            search_engine = SearchEngine(engine=engine, run_func=search_func)
+        except pydantic.ValidationError:
+            search_engine = None
 
-        values['search_engine'] = search_engine
+        values["search_engine"] = search_engine
         return values
 
     async def run(self, context: list[Message], system_text=SEARCH_AND_SUMMARIZE_SYSTEM) -> str:
diff --git a/metagpt/roles/role.py b/metagpt/roles/role.py
index 114e9e599..e407003f5 100644
--- a/metagpt/roles/role.py
+++ b/metagpt/roles/role.py
@@ -113,8 +113,7 @@ class RoleSetting(BaseModel):
 
 class RoleContext(BaseModel):
     """Role Runtime Context"""
-
-    env: "Environment" = Field(default=None)
+    env: "Environment" = Field(default=None, exclude=True)
     msg_buffer: MessageQueue = Field(default_factory=MessageQueue)  # Message Buffer with Asynchronous Updates
     memory: Memory = Field(default_factory=Memory)
     # long_term_memory: LongTermMemory = Field(default_factory=LongTermMemory)
@@ -235,6 +234,7 @@ class Role(BaseModel):
     def _reset(self):
         object.__setattr__(self, "_states", [])
         object.__setattr__(self, "_actions", [])
+        # object.__setattr__(self, "_rc", RoleContext())
 
     @property
     def _setting(self):
diff --git a/metagpt/utils/utils.py b/metagpt/utils/utils.py
index ad5c7626a..b9a8dcb53 100644
--- a/metagpt/utils/utils.py
+++ b/metagpt/utils/utils.py
@@ -65,7 +65,9 @@ def format_trackback_info(limit: int = 2):
 def serialize_decorator(func):
     async def wrapper(self, *args, **kwargs):
         try:
-            return await func(self, *args, **kwargs)
+            result = await func(self, *args, **kwargs)
+            self.serialize()  # Team.serialize
+            return result
         except KeyboardInterrupt as kbi:
             logger.error(f"KeyboardInterrupt occurs, start to serialize the project, exp:\n{format_trackback_info()}")
             self.serialize()  # Team.serialize