Knowledgebase

Overview

After a recent CloudLinux update, the Python Selector and other Selector-related features may stop working in cPanel or via the command line.
Administrators may encounter errors such as:

Error in Python application
IndexError: string index out of range
Traceback (most recent call last):
...

In addition, the LVE Manager service (lvemanager) may show as:

• Not running (inactive (dead)), or

• Producing JSON-related errors.

Root Cause

The issue is caused by a faulty lvemanager package release:

lvemanager.noarch 7.11.24-1.el8.cloudlinux

This version is missing critical configuration and cache files, including:

• /usr/share/l.v.e-manager/lvemanager/cache/users.json

• /usr/share/l.v.e-manager/panelless-version/lvemanager/config.json

Because of these missing files, Python Selector and other services depending on lvemanager cannot function properly.

Diagnosis

1. Check the status of the LVE Manager service:

   systemctl status lvemanager
   

   Expected output:

   inactive (dead)
   

2. Check for missing cache or configuration files:

   ls /usr/share/l.v.e-manager/lvemanager/cache/
   

   Output will likely show that the directory does not exist.

3. Confirm the installed package version:

   yum --enablerepo=* list lvemanager --showduplicates | grep 7.11.24
   

   Example output:

   lvemanager.noarch 7.11.24-1.el8.cloudlinux cloudlinux-updates-testing
   

This confirms the server is running the problematic version from the cloudlinux-updates-testing repository.

Solution

Step 1 — Remove the broken package

yum remove lvemanager -y 

Step 2 — Install the stable version

yum install lvemanager-7.11.23 --enablerepo=cloudlinux-x86_64-server-8 -y

If needed, the RPM can also be downloaded manually from a working server or a CloudLinux mirror.

Step 3 — Restart services

systemctl restart lvemanager
cagefsctl --force-update

Verification

After completing the steps above:

• The lvemanager service should start normally:

  systemctl status lvemanager
  

• Python Selector should function correctly in both cPanel and the CLI.

• The IndexError: string index out of range will no longer appear.

Recommendations

• Do not enable or use the cloudlinux-updates-testing repository on production servers unless specifically instructed.

• Test package updates in a staging environment before applying them to production systems.

• Refer to the CloudLinux changelog for details on recent releases.

Affected version: lvemanager-7.11.24-1.el8.cloudlinux
Resolved by: Downgrading to lvemanager-7.11.23