diff --git a/metagpt/actions/action_node.py b/metagpt/actions/action_node.py
index 9bb12fc84..6f1215920 100644
--- a/metagpt/actions/action_node.py
+++ b/metagpt/actions/action_node.py
@@ -43,7 +43,7 @@ Fill in the above nodes based on the format example.
 """
 
 
-def dict_to_markdown(d, prefix="-", postfix="\n"):
+def dict_to_markdown(d, prefix="###", postfix="\n"):
     markdown_str = ""
     for key, value in d.items():
         markdown_str += f"{prefix} {key}: {value}{postfix}"
diff --git a/metagpt/actions/run_code.py b/metagpt/actions/run_code.py
index fa13a0980..1b9fd252f 100644
--- a/metagpt/actions/run_code.py
+++ b/metagpt/actions/run_code.py
@@ -16,13 +16,13 @@
             class.
 """
 import subprocess
-import traceback
 from typing import Tuple
 
 from metagpt.actions.action import Action
 from metagpt.config import CONFIG
 from metagpt.logs import logger
 from metagpt.schema import RunCodeResult
+from metagpt.utils.exceptions import handle_exception
 
 PROMPT_TEMPLATE = """
 Role: You are a senior development and qa engineer, your role is summarize the code running result.
@@ -78,15 +78,12 @@ class RunCode(Action):
         super().__init__(name, context, llm)
 
     @classmethod
+    @handle_exception
     async def run_text(cls, code) -> Tuple[str, str]:
-        try:
-            # We will document_store the result in this dictionary
-            namespace = {}
-            exec(code, namespace)
-            return namespace.get("result", ""), ""
-        except Exception:
-            # If there is an error in the code, return the error message
-            return "", traceback.format_exc()
+        # We will document_store the result in this dictionary
+        namespace = {}
+        exec(code, namespace)
+        return namespace.get("result", ""), ""
 
     @classmethod
     async def run_script(cls, working_directory, additional_python_paths=[], command=[]) -> Tuple[str, str]:
@@ -145,18 +142,17 @@ class RunCode(Action):
         rsp = await self._aask(prompt)
         return RunCodeResult(summary=rsp, stdout=outs, stderr=errs)
 
+    @staticmethod
+    @handle_exception(exception_type=subprocess.CalledProcessError)
+    def _install_via_subprocess(cmd, check, cwd, env):
+        return subprocess.run(cmd, check=check, cwd=cwd, env=env)
+
     @staticmethod
     def _install_dependencies(working_directory, env):
         install_command = ["python", "-m", "pip", "install", "-r", "requirements.txt"]
         logger.info(" ".join(install_command))
-        try:
-            subprocess.run(install_command, check=True, cwd=working_directory, env=env)
-        except subprocess.CalledProcessError as e:
-            logger.warning(f"{e}")
+        RunCode._install_via_subprocess(install_command, check=True, cwd=working_directory, env=env)
 
         install_pytest_command = ["python", "-m", "pip", "install", "pytest"]
         logger.info(" ".join(install_pytest_command))
-        try:
-            subprocess.run(install_pytest_command, check=True, cwd=working_directory, env=env)
-        except subprocess.CalledProcessError as e:
-            logger.warning(f"{e}")
+        RunCode._install_via_subprocess(install_pytest_command, check=True, cwd=working_directory, env=env)
diff --git a/metagpt/config.py b/metagpt/config.py
index 19bd02c87..45a560209 100644
--- a/metagpt/config.py
+++ b/metagpt/config.py
@@ -137,6 +137,7 @@ class Config(metaclass=Singleton):
                     continue
                 configs.update(yaml_data)
         OPTIONS.set(configs)
+        logger.info(f"Default OpenAI API Model: {self.openai_api_model}")
 
     @staticmethod
     def _get(*args, **kwargs):
diff --git a/metagpt/repo_parser.py b/metagpt/repo_parser.py
index b84dbab9a..9a1218ef1 100644
--- a/metagpt/repo_parser.py
+++ b/metagpt/repo_parser.py
@@ -15,17 +15,17 @@ from pydantic import BaseModel, Field
 
 from metagpt.config import CONFIG
 from metagpt.logs import logger
+from metagpt.utils.exceptions import handle_exception
 
 
 class RepoParser(BaseModel):
     base_directory: Path = Field(default=None)
 
-    def parse_file(self, file_path):
+    @classmethod
+    @handle_exception(exception_type=Exception, default_return=[])
+    def _parse_file(cls, file_path: Path) -> list:
         """Parse a Python file in the repository."""
-        try:
-            return ast.parse(file_path.read_text()).body
-        except:
-            return []
+        return ast.parse(file_path.read_text()).body
 
     def extract_class_and_function_info(self, tree, file_path):
         """Extract class, function, and global variable information from the AST."""
@@ -52,7 +52,7 @@ class RepoParser(BaseModel):
         files_classes = []
         directory = self.base_directory
         for path in directory.rglob("*.py"):
-            tree = self.parse_file(path)
+            tree = self._parse_file(path)
             file_info = self.extract_class_and_function_info(tree, path)
             files_classes.append(file_info)
 
@@ -90,5 +90,10 @@ def main():
     logger.info(pformat(symbols))
 
 
+def error():
+    """raise Exception and logs it"""
+    RepoParser._parse_file(Path("test.py"))
+
+
 if __name__ == "__main__":
-    main()
+    error()
diff --git a/metagpt/schema.py b/metagpt/schema.py
index 758149efa..7359084f5 100644
--- a/metagpt/schema.py
+++ b/metagpt/schema.py
@@ -21,7 +21,7 @@ import uuid
 from asyncio import Queue, QueueEmpty, wait_for
 from json import JSONDecodeError
 from pathlib import Path
-from typing import Dict, List, Optional, Set, TypedDict
+from typing import Dict, List, Optional, Set, Type, TypedDict, TypeVar
 
 from pydantic import BaseModel, Field
 
@@ -36,6 +36,7 @@ from metagpt.const import (
 )
 from metagpt.logs import logger
 from metagpt.utils.common import any_to_str, any_to_str_set
+from metagpt.utils.exceptions import handle_exception
 
 
 class RawMessage(TypedDict):
@@ -160,14 +161,11 @@ class Message(BaseModel):
         return self.json(exclude_none=True)
 
     @staticmethod
+    @handle_exception(exception_type=JSONDecodeError, default_return=None)
     def load(val):
         """Convert the json string to object."""
-        try:
-            d = json.loads(val)
-            return Message(**d)
-        except JSONDecodeError as err:
-            logger.error(f"parse json failed: {val}, error:{err}")
-        return None
+        d = json.loads(val)
+        return Message(**d)
 
 
 class UserMessage(Message):
@@ -249,50 +247,46 @@ class MessageQueue:
         return json.dumps(lst)
 
     @staticmethod
-    def load(self, v) -> "MessageQueue":
+    def load(i) -> "MessageQueue":
         """Convert the json string to the `MessageQueue` object."""
-        q = MessageQueue()
+        queue = MessageQueue()
         try:
-            lst = json.loads(v)
+            lst = json.loads(i)
             for i in lst:
                 msg = Message(**i)
-                q.push(msg)
+                queue.push(msg)
         except JSONDecodeError as e:
-            logger.warning(f"JSON load failed: {v}, error:{e}")
+            logger.warning(f"JSON load failed: {i}, error:{e}")
 
-        return q
+        return queue
 
 
-class CodingContext(BaseModel):
+# 定义一个泛型类型变量
+T = TypeVar("T", bound="BaseModel")
+
+
+class BaseContext(BaseModel):
+    @staticmethod
+    @handle_exception
+    def loads(val: str, cls: Type[T]) -> Optional[T]:
+        m = json.loads(val)
+        return cls(**m)
+
+
+class CodingContext(BaseContext):
     filename: str
     design_doc: Optional[Document]
     task_doc: Optional[Document]
     code_doc: Optional[Document]
 
-    @staticmethod
-    def loads(val: str) -> CodingContext | None:
-        try:
-            m = json.loads(val)
-            return CodingContext(**m)
-        except Exception:
-            return None
 
-
-class TestingContext(BaseModel):
+class TestingContext(BaseContext):
     filename: str
     code_doc: Document
     test_doc: Optional[Document]
 
-    @staticmethod
-    def loads(val: str) -> TestingContext | None:
-        try:
-            m = json.loads(val)
-            return TestingContext(**m)
-        except Exception:
-            return None
 
-
-class RunCodeContext(BaseModel):
+class RunCodeContext(BaseContext):
     mode: str = "script"
     code: Optional[str]
     code_filename: str = ""
@@ -304,28 +298,12 @@ class RunCodeContext(BaseModel):
     output_filename: Optional[str]
     output: Optional[str]
 
-    @staticmethod
-    def loads(val: str) -> RunCodeContext | None:
-        try:
-            m = json.loads(val)
-            return RunCodeContext(**m)
-        except Exception:
-            return None
 
-
-class RunCodeResult(BaseModel):
+class RunCodeResult(BaseContext):
     summary: str
     stdout: str
     stderr: str
 
-    @staticmethod
-    def loads(val: str) -> RunCodeResult | None:
-        try:
-            m = json.loads(val)
-            return RunCodeResult(**m)
-        except Exception:
-            return None
-
 
 class CodeSummarizeContext(BaseModel):
     design_filename: str = ""
@@ -349,5 +327,5 @@ class CodeSummarizeContext(BaseModel):
         return hash((self.design_filename, self.task_filename))
 
 
-class BugFixContext(BaseModel):
+class BugFixContext(BaseContext):
     filename: str = ""
diff --git a/metagpt/tools/search_engine_meilisearch.py b/metagpt/tools/search_engine_meilisearch.py
index f7c1c685a..ea6db4dbd 100644
--- a/metagpt/tools/search_engine_meilisearch.py
+++ b/metagpt/tools/search_engine_meilisearch.py
@@ -11,6 +11,8 @@ from typing import List
 import meilisearch
 from meilisearch.index import Index
 
+from metagpt.utils.exceptions import handle_exception
+
 
 class DataSource:
     def __init__(self, name: str, url: str):
@@ -34,11 +36,7 @@ class MeilisearchEngine:
         index.add_documents(documents)
         self.set_index(index)
 
+    @handle_exception(exception_type=Exception, default_return=[])
     def search(self, query):
-        try:
-            search_results = self._index.search(query)
-            return search_results["hits"]
-        except Exception as e:
-            # Handle MeiliSearch API errors
-            print(f"MeiliSearch API error: {e}")
-            return []
+        search_results = self._index.search(query)
+        return search_results["hits"]
diff --git a/metagpt/utils/common.py b/metagpt/utils/common.py
index cdabe96a3..bf435b74f 100644
--- a/metagpt/utils/common.py
+++ b/metagpt/utils/common.py
@@ -20,11 +20,13 @@ import re
 import typing
 from typing import List, Tuple, Union
 
+import aiofiles
 import loguru
 from tenacity import RetryCallState, _utils
 
 from metagpt.const import MESSAGE_ROUTE_TO_ALL
 from metagpt.logs import logger
+from metagpt.utils.exceptions import handle_exception
 
 
 def check_cmd_exists(command) -> int:
@@ -399,3 +401,11 @@ def general_after_log(i: "loguru.Logger", sec_format: str = "%0.3f") -> typing.C
         )
 
     return log_it
+
+
+@handle_exception
+async def aread(file_path: str) -> str:
+    """Read file asynchronously."""
+    async with aiofiles.open(str(file_path), mode="r") as reader:
+        content = await reader.read()
+    return content
diff --git a/metagpt/utils/custom_decoder.py b/metagpt/utils/custom_decoder.py
index 373d16356..eb01a1115 100644
--- a/metagpt/utils/custom_decoder.py
+++ b/metagpt/utils/custom_decoder.py
@@ -25,7 +25,7 @@ def py_make_scanner(context):
         except IndexError:
             raise StopIteration(idx) from None
 
-        if nextchar == '"' or nextchar == "'":
+        if nextchar in ("'", '"'):
             if idx + 2 < len(string) and string[idx + 1] == nextchar and string[idx + 2] == nextchar:
                 # Handle the case where the next two characters are the same as nextchar
                 return parse_string(string, idx + 3, strict, delimiter=nextchar * 3)  # triple quote
diff --git a/metagpt/utils/dependency_file.py b/metagpt/utils/dependency_file.py
index e8347d567..d03444f0e 100644
--- a/metagpt/utils/dependency_file.py
+++ b/metagpt/utils/dependency_file.py
@@ -15,7 +15,8 @@ from typing import Set
 import aiofiles
 
 from metagpt.config import CONFIG
-from metagpt.logs import logger
+from metagpt.utils.common import aread
+from metagpt.utils.exceptions import handle_exception
 
 
 class DependencyFile:
@@ -36,21 +37,14 @@ class DependencyFile:
         """Load dependencies from the file asynchronously."""
         if not self._filename.exists():
             return
-        try:
-            async with aiofiles.open(str(self._filename), mode="r") as reader:
-                data = await reader.read()
-            self._dependencies = json.loads(data)
-        except Exception as e:
-            logger.error(f"Failed to load {str(self._filename)}, error:{e}")
+        self._dependencies = await aread(self._filename)
 
+    @handle_exception
     async def save(self):
         """Save dependencies to the file asynchronously."""
-        try:
-            data = json.dumps(self._dependencies)
-            async with aiofiles.open(str(self._filename), mode="w") as writer:
-                await writer.write(data)
-        except Exception as e:
-            logger.error(f"Failed to save {str(self._filename)}, error:{e}")
+        data = json.dumps(self._dependencies)
+        async with aiofiles.open(str(self._filename), mode="w") as writer:
+            await writer.write(data)
 
     async def update(self, filename: Path | str, dependencies: Set[Path | str], persist=True):
         """Update dependencies for a file asynchronously.
diff --git a/metagpt/utils/exceptions.py b/metagpt/utils/exceptions.py
new file mode 100644
index 000000000..b4b5aa590
--- /dev/null
+++ b/metagpt/utils/exceptions.py
@@ -0,0 +1,59 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+"""
+@Time    : 2023/12/19 14:46
+@Author  : alexanderwu
+@File    : exceptions.py
+"""
+
+
+import asyncio
+import functools
+import traceback
+from typing import Any, Callable, Tuple, Type, TypeVar, Union
+
+from metagpt.logs import logger
+
+ReturnType = TypeVar("ReturnType")
+
+
+def handle_exception(
+    _func: Callable[..., ReturnType] = None,
+    *,
+    exception_type: Union[Type[Exception], Tuple[Type[Exception], ...]] = Exception,
+    default_return: Any = None,
+) -> Callable[..., ReturnType]:
+    """handle exception, return default value"""
+
+    def decorator(func: Callable[..., ReturnType]) -> Callable[..., ReturnType]:
+        @functools.wraps(func)
+        async def async_wrapper(*args: Any, **kwargs: Any) -> ReturnType:
+            try:
+                return await func(*args, **kwargs)
+            except exception_type as e:
+                logger.opt(depth=1).error(
+                    f"Calling {func.__name__} with args: {args}, kwargs: {kwargs} failed: {e}, "
+                    f"stack: {traceback.format_exc()}"
+                )
+                return default_return
+
+        @functools.wraps(func)
+        def sync_wrapper(*args: Any, **kwargs: Any) -> ReturnType:
+            try:
+                return func(*args, **kwargs)
+            except exception_type as e:
+                logger.opt(depth=1).error(
+                    f"Calling {func.__name__} with args: {args}, kwargs: {kwargs} failed: {e}, "
+                    f"stack: {traceback.format_exc()}"
+                )
+                return default_return
+
+        if asyncio.iscoroutinefunction(func):
+            return async_wrapper
+        else:
+            return sync_wrapper
+
+    if _func is None:
+        return decorator
+    else:
+        return decorator(_func)
diff --git a/metagpt/utils/file.py b/metagpt/utils/file.py
index 6bb9a1a97..f62b44eb8 100644
--- a/metagpt/utils/file.py
+++ b/metagpt/utils/file.py
@@ -11,6 +11,7 @@ from pathlib import Path
 import aiofiles
 
 from metagpt.logs import logger
+from metagpt.utils.exceptions import handle_exception
 
 
 class File:
@@ -19,6 +20,7 @@ class File:
     CHUNK_SIZE = 64 * 1024
 
     @classmethod
+    @handle_exception
     async def write(cls, root_path: Path, filename: str, content: bytes) -> Path:
         """Write the file content to the local specified path.
 
@@ -33,18 +35,15 @@ class File:
         Raises:
             Exception: If an unexpected error occurs during the file writing process.
         """
-        try:
-            root_path.mkdir(parents=True, exist_ok=True)
-            full_path = root_path / filename
-            async with aiofiles.open(full_path, mode="wb") as writer:
-                await writer.write(content)
-                logger.debug(f"Successfully write file: {full_path}")
-                return full_path
-        except Exception as e:
-            logger.error(f"Error writing file: {e}")
-            raise e
+        root_path.mkdir(parents=True, exist_ok=True)
+        full_path = root_path / filename
+        async with aiofiles.open(full_path, mode="wb") as writer:
+            await writer.write(content)
+            logger.debug(f"Successfully write file: {full_path}")
+            return full_path
 
     @classmethod
+    @handle_exception
     async def read(cls, file_path: Path, chunk_size: int = None) -> bytes:
         """Partitioning read the file content from the local specified path.
 
@@ -58,18 +57,14 @@ class File:
         Raises:
             Exception: If an unexpected error occurs during the file reading process.
         """
-        try:
-            chunk_size = chunk_size or cls.CHUNK_SIZE
-            async with aiofiles.open(file_path, mode="rb") as reader:
-                chunks = list()
-                while True:
-                    chunk = await reader.read(chunk_size)
-                    if not chunk:
-                        break
-                    chunks.append(chunk)
-                content = b"".join(chunks)
-                logger.debug(f"Successfully read file, the path of file: {file_path}")
-                return content
-        except Exception as e:
-            logger.error(f"Error reading file: {e}")
-            raise e
+        chunk_size = chunk_size or cls.CHUNK_SIZE
+        async with aiofiles.open(file_path, mode="rb") as reader:
+            chunks = list()
+            while True:
+                chunk = await reader.read(chunk_size)
+                if not chunk:
+                    break
+                chunks.append(chunk)
+            content = b"".join(chunks)
+            logger.debug(f"Successfully read file, the path of file: {file_path}")
+            return content
diff --git a/metagpt/utils/file_repository.py b/metagpt/utils/file_repository.py
index 2eca799a8..099556a6b 100644
--- a/metagpt/utils/file_repository.py
+++ b/metagpt/utils/file_repository.py
@@ -19,6 +19,7 @@ import aiofiles
 from metagpt.config import CONFIG
 from metagpt.logs import logger
 from metagpt.schema import Document
+from metagpt.utils.common import aread
 from metagpt.utils.json_to_markdown import json_to_markdown
 
 
@@ -97,15 +98,7 @@ class FileRepository:
         path_name = self.workdir / filename
         if not path_name.exists():
             return None
-        try:
-            async with aiofiles.open(str(path_name), mode="r") as reader:
-                doc.content = await reader.read()
-        except FileNotFoundError as e:
-            logger.info(f"open {str(path_name)} failed:{e}")
-            return None
-        except Exception as e:
-            logger.info(f"open {str(path_name)} failed:{e}")
-            return None
+        doc.content = await aread(path_name)
         return doc
 
     async def get_all(self) -> List[Document]: