CloudLinux Python Selector Fails

sarat beer

• August 05, 2025 07:36

Hello

We are encountering a critical error with the Python Selector on our CloudLinux + cPanel server.

When executing the Python Selector, we receive the following traceback:

how to resolve it?

IndexError: string index out of range Traceback (most recent call last):  File "/opt/cloudlinux/venv/lib64/python3.11/site-packages/clselector/cl_selector.py", line 193, in run    self._opts = self._parse_args(argv)                 ^^^^^^^^^^^^^^^^^^^^^^  File "/opt/cloudlinux/venv/lib64/python3.11/site-packages/clselector/cl_selector.py", line 554, in _parse_args    status, data = parse_cloudlinux_selector_opts(                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  File "/opt/cloudlinux/venv/lib64/python3.11/site-packages/clselector/cl_selector_arg_parse.py", line 322, in parse_cloudlinux_selector_opts    selector_status = list(lib.get_selector_status().values())[0]                           ^^^^^^^^^^^^^^^^^^^^^^^^^  File "/opt/cloudlinux/venv/lib64/python3.11/site-packages/clselector/selectorlib.py", line 487, in get_selector_status    return self.get_python_selector_status()           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  File "/opt/cloudlinux/venv/lib64/python3.11/site-packages/clselector/selectorlib.py", line 322, in get_python_selector_status    if PythonManager().selector_enabled:       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  File "/opt/cloudlinux/venv/lib64/python3.11/site-packages/clselect/baseclselect/selector_manager.py", line 38, in selector_enabled    return self.cfg.selector_enabled           ^^^^^^^^^^^^^^^^^^^^^^^^^  File "/opt/cloudlinux/venv/lib64/python3.11/site-packages/clselect/baseclselect/config.py", line 143, in selector_enabled    return self.Cfg.selector_enabled and bool(self.pkg.installed_versions)                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^  File "/opt/cloudlinux/venv/lib64/python3.11/site-packages/clselect/baseclselect/pkgmanager.py", line 116, in installed_versions    self._versions_info = self._scan_interpreter_versions()                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  File "/opt/cloudlinux/venv/lib64/python3.11/site-packages/clselect/clselectpython/pkgmanager.py", line 64, in _scan_interpreter_versions    return scan_python_versions()           ^^^^^^^^^^^^^^^^^^^^^^  File "/opt/cloudlinux/venv/lib64/python3.11/site-packages/clselect/clselectpython/__init__.py", line 58, in scan_python_versions    maj_ver = f'{maj_ver[0]}.{maj_ver[1:]}'                 ~~~~~~~^^^IndexError: string index out of range

• 

  cPRex Jurassic Moderator

  • August 05, 2025 14:20

  Hey there!  This specific page is part of the CloudLinux set of tools on the server, and I'm not finding this exact error on my end.  It would likely be best to reach out to either CloudLinux directly or your license provider so they can check the server and determine the root cause of the issue.

  0
• 

  Jesus Suarez

  • August 05, 2025 19:17

  I solved it by running these commands.

  Try it and let me know.

  dnf update cloudlinux-release
  cagefsctl --force-update
  cagefsctl --remount-all
  systemctl restart cagefs
  yum reinstall alt-python* clselector lve-utils lvemanager
  yum update alt-python* clselector lve-utils lvemanager

  0
• 

  sarat beer

  • August 06, 2025 05:02

  Hi
  Thanks to Jesus Suarez for sharing the solution.

  0
• 

  Jesus Suarez

  • August 06, 2025 12:22

  I had the same issue after a CloudLinux update reinstalling lvemanager and updating CageFS resolved it for me. Make sure to run cagefsctl --force-update afterwards, or the selector may still fail.

  So you did what I said. I'm glad my solution worked for you.

  0

Please sign in to leave a comment.