【已解决】面板升级11.5.0后，无法登录:No module named ＇cbor2＇
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：11.5.0系统版本：
CentOS7.9.2问题描述：
9.x面板升级，无法登录
相关截图（日志、错误）：
ModuleNotFoundError: No module named ＇cbor2＇
mv /www/server/panel/pyenv/ /www/backup/pyenv_backup
curl http://download.bt.cn/install/update_panel.sh|bash
没有解决问题
非面板终端执行bt 16 修复面板 同样是Centos8升级后面板11.5后报错这个错误 也遇到一样的问题了。。。 在ssh终端执行bt 16可以解决，执行了两次，第二次解决了 仍然失败
```
# bt 16
===============================================
正在执行(16)...
===============================================
Download node: download.bt.cn
正在检测磁盘空间...
磁盘剩余【35.96 GB】
必要工具检查通过: wget, unzip
当前面版版本：11.5.0 (正式版)，更新时间：2026-01-22 11:51:32
即将修复为：11.5.0 (正式版)，远程包打包时间：2026-01-22 11:51:32
开始处理预更新...
当前版本：11.5.0, 目标版本：11.5.0
Traceback (most recent call last):
File "/www/server/panel/pyenv/lib/python3.7/runpy.py", line 193, in _run_module_as_main
"__main__", mod_spec)
File "/www/server/panel/pyenv/lib/python3.7/runpy.py", line 85, in _run_code
exec(code, run_globals)
File "/www/server/panel/pyenv/lib/python3.7/site-packages/pip/__main__.py", line 23, in <module>
from pip._internal.cli.main import main as _main# isort:skip # noqa
File "/www/server/panel/pyenv/lib/python3.7/site-packages/pip/_internal/cli/main.py", line 10, in <module>
from pip._internal.cli.autocompletion import autocomplete
File "/www/server/panel/pyenv/lib/python3.7/site-packages/pip/_internal/cli/autocompletion.py", line 9, in <module>
from pip._internal.cli.main_parser import create_main_parser
File "/www/server/panel/pyenv/lib/python3.7/site-packages/pip/_internal/cli/main_parser.py", line 7, in <module>
from pip._internal.cli import cmdoptions
File "/www/server/panel/pyenv/lib/python3.7/site-packages/pip/_internal/cli/cmdoptions.py", line 25, in <module>
from pip._internal.cli.progress_bars import BAR_TYPES
File "/www/server/panel/pyenv/lib/python3.7/site-packages/pip/_internal/cli/progress_bars.py", line 12, in <module>
from pip._internal.utils.logging import get_indentation
File "/www/server/panel/pyenv/lib/python3.7/site-packages/pip/_internal/utils/logging.py", line 18, in <module>
from pip._internal.utils.misc import ensure_dir
File "/www/server/panel/pyenv/lib/python3.7/site-packages/pip/_internal/utils/misc.py", line 34, in <module>
from pip._internal.locations import get_major_minor_version, site_packages, user_site
File "/www/server/panel/pyenv/lib/python3.7/site-packages/pip/_internal/locations/__init__.py", line 14, in <module>
from . import _distutils, _sysconfig
File "/www/server/panel/pyenv/lib/python3.7/site-packages/pip/_internal/locations/_sysconfig.py", line 8, in <module>
from pip._internal.exceptions import InvalidSchemeCombination, UserInstallationInvalid
ImportError: cannot import name 'InvalidSchemeCombination' from 'pip._internal.exceptions' (/www/server/panel/pyenv/lib/python3.7/site-packages/pip/_internal/exceptions.py)
必要库安装失败 ！！！
请尝试使用以下命令手动安装 btpip install asn1crypto==1.5.1 cbor2==5.4.6
执行失败，返回码：1ERROR：预处理脚本执行失败
ERROR：预处理失败，无法执行升级，请检查网络连接
```
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