Python/NodeJS application shows the "Invalid command 'PassengerAppRoot'" error

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 Sep 3, 2025  0  18
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Python/NodeJS application shows the "Invalid command 'PassengerAppRoot'" error

šŸš€ Fix: Invalid command 'PassengerAppRoot' Error on CloudLinux

If your Python or NodeJS app throws this error:

Invalid command 'PassengerAppRoot', perhaps misspelled or defined by a module not included in the server configuration.

šŸ–„ļø Environment

  • CloudLinux OS 6 / 7 / 8

  • cPanel / DirectAdmin

  • Python Selector / NodeJS Selector

āœ… Solution

šŸ”¹ For cPanel

Install the Passenger module:

# yum install ea-ruby27-mod_passengerĀ 

šŸ”¹ For DirectAdmin

Install the Passenger module:

# yum install alt-mod-passengerĀ 

šŸ”„ Update CageFS

After installation, update CageFS:

# cagefsctl --force-update && cagefsctl -MĀ 

šŸŽÆ Final Notes

  • Make sure you restart your web service after the installation.

  • This will enable Passenger support for your apps and resolve the error.

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