Plesk can not be updated or is not accessible: Class Laminas\ServiceManager\ServiceLocatorInterface cannot implement previously implemented interface
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Symptoms
Plesk update fails or Plesk panel cannot be accessed with the following message:
PHP Fatal error: Class Laminas\ServiceManager\ServiceLocatorInterface cannot implement previously implemented interface Psr\Container\ContainerInterface in /opt/psa/admin/plib/modules/monitoring/vendor/laminas/laminas-servicemanager/src/ServiceLocatorInterface.php on line 18
Cause
The outdated version of the Monitoring extension is installed on the server.
Symptoms Plesk update fails or Plesk panel cannot be accessed with the following message: PHP Fatal error: Class Laminas\ServiceManager\ServiceLocatorInterface cannot implement previously implemented interface Psr\Container\ContainerInterface in /opt/psa/admin/plib/modules/monitoring/vendor/laminas/laminas-servicemanager/src/ServiceLocatorInterface.php on line 18 Cause The outdated version of the Monitoring extension is installed on the server.
Symptoms Plesk update fails or Plesk panel cannot be accessed with the following message: PHP Fatal error: Class Laminas\ServiceManager\ServiceLocatorInterface cannot implement previously implemented interface Psr\Container\ContainerInterface in /opt/psa/admin/plib/modules/monitoring/vendor/laminas/laminas-servicemanager/src/ServiceLocatorInterface.php on line 18 Cause The outdated version of the Monitoring extension is installed on the server.