Issues upgrading from 8.4 to 9

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  • jhudson
    Junior Member
    • Jul 2025
    • 1

    #1

    Issues upgrading from 8.4 to 9

    I am having issues upgrading my Espo install from 8.4.2. I installed with the script, and I am trying to use the command.sh from CLI to upgrade my install.
    Running on Ubuntu, when I run the upgrade command it shows Docker images being pulled but then the upgrade doesn't work.
    When I try to run the upgrade command from inside of the docker container I get an error message:

    Error: Class "Symfony\Component\Mailer\Transport\AbstractTransp ort" not found

    Is there a way to fix this issue?
    Thanks in advance for any help you can provide.
  • victor
    Active Community Member
    • Aug 2022
    • 953

    #2
    - Enable Debug mode: https://docs.espocrm.com/administrat...oubleshooting/.
    - Uninstall and remove absolutely all extensions.
    - Upgrade your instance to the latest version and install your extensions.
    If additional errors occur during or after the upgrade, please let us know by adding an EspoCRM error log.

    Comment


    • jhudson
      jhudson commented
      Editing a comment
      Thanks a bunch for the recommendation!
      I'm going to try this later today (when I have fewer users accessing the server) and report back.
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