diff --git a/astrbot/core/provider/func_tool_manager.py b/astrbot/core/provider/func_tool_manager.py
index 52f31c363..55c53eb3a 100644
--- a/astrbot/core/provider/func_tool_manager.py
+++ b/astrbot/core/provider/func_tool_manager.py
@@ -3,17 +3,19 @@ import json
 import textwrap
 import os
 import asyncio
-import mcp
 import copy
 
 from typing import Dict, List, Awaitable, Literal, Any
 from dataclasses import dataclass
 from typing import Optional
 from contextlib import AsyncExitStack
-
-from mcp.client.stdio import stdio_client
 from astrbot import logger
 
+try:
+    import mcp
+except (ModuleNotFoundError, ImportError):
+    logger.warning("警告: 缺少依赖库 'mcp'，将无法使用 MCP 服务。")
+
 DEFAULT_MCP_CONFIG = {"mcpServers": {}}
 
 SUPPORTED_TYPES = [
@@ -99,7 +101,7 @@ class MCPClient:
         )
 
         stdio_transport = await self.exit_stack.enter_async_context(
-            stdio_client(server_params)
+            mcp.stdio_client(server_params)
         )
         self.stdio, self.write = stdio_transport
         self.session = await self.exit_stack.enter_async_context(
diff --git a/astrbot/core/star/star_manager.py b/astrbot/core/star/star_manager.py
index 347bc13ef..c49027268 100644
--- a/astrbot/core/star/star_manager.py
+++ b/astrbot/core/star/star_manager.py
@@ -471,9 +471,11 @@ class PluginManager:
         # 从 star_registry 和 star_map 中删除
         await self._unbind_plugin(plugin_name, plugin.module_path)
 
-        if not remove_dir(os.path.join(ppath, root_dir_name)):
+        try:
+            remove_dir(os.path.join(ppath, root_dir_name))
+        except Exception as e:
             raise Exception(
-                "移除插件成功，但是删除插件文件夹失败。您可以手动删除该文件夹，位于 addons/plugins/ 下。"
+                f"移除插件成功，但是删除插件文件夹失败: {str(e)}。您可以手动删除该文件夹，位于 addons/plugins/ 下。"
             )
 
     async def _unbind_plugin(self, plugin_name: str, plugin_module_path: str):
diff --git a/astrbot/core/utils/io.py b/astrbot/core/utils/io.py
index 7393cb424..c996cadbd 100644
--- a/astrbot/core/utils/io.py
+++ b/astrbot/core/utils/io.py
@@ -20,24 +20,20 @@ def on_error(func, path, exc_info):
     """
     a callback of the rmtree function.
     """
-    print(f"remove {path} failed.")
     import stat
 
     if not os.access(path, os.W_OK):
         os.chmod(path, stat.S_IWUSR)
         func(path)
     else:
-        raise
+        raise exc_info[1]
 
 
 def remove_dir(file_path) -> bool:
     if not os.path.exists(file_path):
         return True
-    try:
-        shutil.rmtree(file_path, onerror=on_error)
-        return True
-    except BaseException:
-        return False
+    shutil.rmtree(file_path, onerror=on_error)
+    return True
 
 
 def port_checker(port: int, host: str = "localhost"):