Matomo

Matomo
Fixing Matomo CLI Upgrade Errors After Failed Web Update to 5.6.1
ByPieter Bakker 09/12/202509/12/2025
When upgrading Matomo to version 5.6.1 via the web interface, the process fails if Composer is missing. Installing Composer and switching to CLI (console core:update) then triggers fatal PHP errors like Class ‘Piwik\Plugin\Manager’ not found in core/bootstrap.php:59. This happened to me on a production server with PHP 8.1. Symptoms and Root Cause Web upgrade to 5.6.1…
Read More Fixing Matomo CLI Upgrade Errors After Failed Web Update to 5.6.1

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