Django项目报错：'SafeExceptionReporterFilter'无get_safe_settings属性

问题 #

首次使用Django搭配React和Django Toolbar开发Web应用，该项目一周前还能正常运行，现在启动时出现如下错误：

Exception ignored in thread started by: <function check_errors.<locals>.wrapper at 0x0000018E6BC28310>
Traceback (most recent call last):
File "C:\Users\nagyd.virtualenvs\pythonProject\lib\site-packages\django\utils\autoreload.py", line 225, in wrapper
fn(*args, **kwargs)
File "C:\Users\nagyd.virtualenvs\pythonProject\lib\site-packages\django\core\management\commands\runserver.py", line 117, in inner_run
self.check(display_num_errors=True)
File "C:\Users\nagyd.virtualenvs\pythonProject\lib\site-packages\django\core\management\base.py", line 376, in check
all_issues = self._run_checks(
File "C:\Users\nagyd.virtualenvs\pythonProject\lib\site-packages\django\core\management\base.py", line 366, in _run_checks
return checks.run_checks(**kwargs)
File "C:\Users\nagyd.virtualenvs\pythonProject\lib\site-packages\django\core\checks\registry.py", line 71, in run_checks
new_errors = check(app_configs=app_configs)
File "C:\Users\nagyd.virtualenvs\pythonProject\lib\site-packages\django\core\checks\urls.py", line 13, in check_url_config
return check_resolver(resolver)
File "C:\Users\nagyd.virtualenvs\pythonProject\lib\site-packages\django\core\checks\urls.py", line 23, in check_resolver
return check_method()
File "C:\Users\nagyd.virtualenvs\pythonProject\lib\site-packages\django\urls\resolvers.py", line 396, in check
for pattern in self.url_patterns:
File "C:\Users\nagyd.virtualenvs\pythonProject\lib\site-packages\django\utils\functional.py", line 37, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "C:\Users\nagyd.virtualenvs\pythonProject\lib\site-packages\django\urls\resolvers.py", line 533, in url_patterns
patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
File "C:\Users\nagyd.virtualenvs\pythonProject\lib\site-packages\django\utils\functional.py", line 37, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "C:\Users\nagyd.virtualenvs\pythonProject\lib\site-packages\django\urls\resolvers.py", line 526, in urlconf_module
return import_module(self.urlconf_name)
File "C:\Users\nagyd\AppData\Local\Programs\Python\Python39\lib\importlib_init_.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1030, in _gcd_import
File "<frozen importlib._bootstrap>", line 1007, in _find_and_load
File "<frozen importlib._bootstrap>", line 986, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 680, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 855, in exec_module
File "<frozen importlib._bootstrap>", line 228, in _call_with_frames_removed
File "C:\Users\nagyd\PycharmProjects\pythonProject\firstproject\firstproject\urls.py", line 27, in <module>
path('__debug__/', include('debug_toolbar.urls')),
File "C:\Users\nagyd.virtualenvs\pythonProject\lib\site-packages\django\urls\conf.py", line 34, in include
urlconf_module = import_module(urlconf_module)
File "C:\Users\nagyd\AppData\Local\Programs\Python\Python39\lib\importlib_init_.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1030, in _gcd_import
File "<frozen importlib._bootstrap>", line 1007, in _find_and_load
File "<frozen importlib._bootstrap>", line 986, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 680, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 855, in exec_module
File "<frozen importlib._bootstrap>", line 228, in _call_with_frames_removed
File "C:\Users\nagyd.virtualenvs\pythonProject\lib\site-packages\debug_toolbar\panels\settings.py", line 7, in <module>
get_safe_settings = get_default_exception_reporter_filter().get_safe_settings
AttributeError: 'SafeExceptionReporterFilter' object has no attribute 'get_safe_settings'

解决建议 #

• 修复版本兼容性：这个错误是Django Debug Toolbar与当前Django版本不匹配导致的——get_safe_settings方法在新版Django中被移除/重命名，但你安装的Debug Toolbar版本仍在调用它。
  • 升级Debug Toolbar：执行命令 pip install --upgrade django-debug-toolbar，安装适配当前Django版本的最新版。
  • 降级Django：如果不想升级Debug Toolbar，先查看该Toolbar支持的Django版本范围，再执行降级命令，比如 pip install django==3.2.x（替换为对应兼容版本号）。
• 临时禁用Debug Toolbar：若需紧急启动项目，可临时注释掉urls.py中Debug Toolbar的路由配置，以及settings.py里相关的APP注册和中间件配置，后续处理好版本问题再恢复。
• 核对虚拟环境：确认当前使用的虚拟环境为项目专属环境，避免因环境切换导致依赖版本混乱。

内容的提问来源于stack exchange，提问作者FuzzyBoo