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Missed symbolic link /usr/local/psa -> /opt/psa/ causes incorrect Plesk updates installation on Debian or Ubuntu

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Taras Ermoshin
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Plesk for Linux DoNotDelete:docref kb: technical ABT: Group B

Applicable to:

  • Plesk for Linux

Symptoms

  • Plesk updates are not installed correctly on Debian or Ubuntu.

  • Right after Plesk installation, the following error is shown on the login page:

    CONFIG_TEXT: Warning: Unknown: failed to open stream: No such file or directory in Unknown on line 0
    Fatal error: Unknown: Failed opening required 'auth.php' (include_path='.;C:\php\pear') in Unknown on line 0

Cause

Missing symbolic link /usr/local/psa/ -> /opt/psa/.

Resolution

  1. Connect to the server using SSH.

  2. Remove the link /usr/local/psa if there is any:

    # unlink /usr/local/psa

  3. Remove the directory /usr/local/psa if it exists:

    # rm -rf /usr/local/psa

  4. Create a symbolic link /usr/local/psa/ -> /opt/psa/:

    # ln -s /opt/psa /usr/local/psa

  5. Reinstall Plesk updates as described in the article How to update Plesk.

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