使用frp内网穿透后，访问宝塔面板，提示Internal Server Error

为了能快速了解并处理您的问题，请提供以下基础信息：

面板、插件版本：

宝塔linux面板 11.2.0

系统版本：

CentOS  7.9

问题描述：

使用frp内网穿透后，使用代理的ip(112.34.56.78:27273)访问宝塔面板，提示Internal Server Error，使用内网ip(192.168.0.200:27273)访问宝塔面板，没有问题，使用命令行输入bt 用22显示面板错误日志，查看显示是forwarded_ips = request.headers.get('X-Forwarded-For').split(',')
AttributeError: 'NoneType' object has no attribute 'split'。

相关截图（日志、错误）：

完整的错误日志是
[2026-01-20 17:08:36,822][ERROR] - Exception on /login [GET]
Traceback (most recent call last):
  File "/www/server/panel/pyenv/lib/python3.7/site-packages/flask/app.py", line 1823, in full_dispatch_request
    rv = self.dispatch_request()
  File "/www/server/panel/pyenv/lib/python3.7/site-packages/flask/app.py", line 1799, in dispatch_request
    return self.ensure_sync(self.view_functions[rule.endpoint])(**view_args)
  File "/www/server/panel/BTPanel/__init__.py", line 1954, in login
    return public.error_not_login(None)
  File "class/public.py", line 5755, in error_not_login
    client_status = check_client_info()
  File "class/public.py", line 8272, in check_client_info
    remote_addr = get_client_ip()
  File "class/public.py", line 834, in get_client_ip
    return GetClientIp()
  File "class/public.py", line 807, in GetClientIp
    forwarded_ips = request.headers.get('X-Forwarded-For').split(',')
AttributeError: 'NoneType' object has no attribute 'split'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/www/server/panel/pyenv/lib/python3.7/site-packages/flask/app.py", line 2529, in wsgi_app
    response = self.full_dispatch_request()
  File "/www/server/panel/pyenv/lib/python3.7/site-packages/flask/app.py", line 1825, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/www/server/panel/pyenv/lib/python3.7/site-packages/flask/app.py", line 1676, in handle_user_exception
    return self.ensure_sync(handler)(e)
  File "/www/server/panel/BTPanel/__init__.py", line 425, in error_500
    return public.error_not_login()
  File "class/public.py", line 5755, in error_not_login
    client_status = check_client_info()
  File "class/public.py", line 8272, in check_client_info
    remote_addr = get_client_ip()
  File "class/public.py", line 834, in get_client_ip
    return GetClientIp()
  File "class/public.py", line 807, in GetClientIp
    forwarded_ips = request.headers.get('X-Forwarded-For').split(',')
AttributeError: 'NoneType' object has no attribute 'split'

你x头都设置错了，还好意思问