n manager.
     * @throws ContainerModificationsNotAllowedException If the allow override flag has been toggled off, and a
     *                                                   service instanceexists for a given service.
     */
    public function configure(array $config)
    {
        if (isset($config['services'])) {
            foreach ($config['services'] as $service) {
                $this->validate($service);
            }
        }

        parent::configure($config);

        return $this;
    }

    /**
     * Override setService for additional plugin validation.
     *
     * {@inheritDoc}
     *
     * @param string|class-string<InstanceType> $name
     * @param InstanceType $service
     */
    public function setService($name, $service)
    {
        $this->validate($service);
        parent::setService($name, $service);
    }

    /**
     * @param class-string<InstanceType>|string $name Service name of plugin to retrieve.
     * @param null|array<mixed> $options Options to use when creating the instance.
     * @return mixed
     * @psalm-return ($name is class-string<InstanceType> ? InstanceType : mixed)
     * @throws Exception\ServiceNotFoundException If the manager does not have
     *     a service definition for the instance, and the service is not
     *     auto-invokable.
     * @throws InvalidServiceException If the plugin created is invalid for the
     *     plugin context.
     */
    public function get($name, ?array $options = null)
    {
        if (! $this->has($name)) {
            if (! $this->autoAddInvokableClass || ! class_exists($name)) {
                throw new Exception\ServiceNotFoundException(sprintf(
                    'A plugin by the name "%s" was not found in the plugin manager %s',
                    $name,
                    static::class
                ));
            }

            $this->setFactory($name, Factory\InvokableFactory::class);
        }

        $instance = ! $options ? parent::get($name) : $this->build($name, $options);
        $this->validate($instance);
        return $instance;
    }

    /**
     * {@inheritDoc}
     *
     * @psalm-assert InstanceType $instance
     */
    public function validate(mixed $instance)
    {
        if (method_exists($this, 'validatePlugin')) {
            trigger_error(sprintf(
                '%s::validatePlugin() has been deprecated as of 3.0; please define validate() instead',
                static::class
            ), E_USER_DEPRECATED);
            $this->validatePlugin($instance);
            return;
        }

        if (empty($this->instanceOf) || $instance instanceof $this->instanceOf) {
            return;
        }

        throw new InvalidServiceException(sprintf(
            'Plugin manager "%s" expected an instance of type "%s", but "%s" was received',
            self::class,
            $this->instanceOf,
            is_object($instance) ? $instance::class : gettype($instance)
        ));
    }

    /**
     * Implemented for backwards compatibility only.
     *
     * Returns the creation context.
     *
     * @deprecated since 3.0.0. The creation context should be passed during
     *     instantiation instead.
     *
     * @return void
     */
    public function setServiceLocator(ContainerInterface $container)
    {
        trigger_error(sprintf(
            'Usage of %s is deprecated since v3.0.0; please pass the container to the constructor instead',
            __METHOD__
        ), E_USER_DEPRECATED);
        $this->creationContext = $container;
    }
}
n manager.
     * @throws ContainerModificationsNotAllowedException If the allow override flag has been toggled off, and a
     *                                                   service instanceexists for a given service.
     */
    public function configure(array $config)
    {
        if (isset($config['services'])) {
            foreach ($config['services'] as $service) {
                $this->validate($service);
            }
        }

        parent::configure($config);

        return $this;
    }

    /**
     * Override setService for additional plugin validation.
     *
     * {@inheritDoc}
     *
     * @param string|class-string<InstanceType> $name
     * @param InstanceType $service
     */
    public function setService($name, $service)
    {
        $this->validate($service);
        parent::setService($name, $service);
    }

    /**
     * @param class-string<InstanceType>|string $name Service name of plugin to retrieve.
     * @param null|array<mixed> $options Options to use when creating the instance.
     * @return mixed
     * @psalm-return ($name is class-string<InstanceType> ? InstanceType : mixed)
     * @throws Exception\ServiceNotFoundException If the manager does not have
     *     a service definition for the instance, and the service is not
     *     auto-invokable.
     * @throws InvalidServiceException If the plugin created is invalid for the
     *     plugin context.
     */
    public function get($name, ?array $options = null)
    {
        if (! $this->has($name)) {
            if (! $this->autoAddInvokableClass || ! class_exists($name)) {
                throw new Exception\ServiceNotFoundException(sprintf(
                    'A plugin by the name "%s" was not found in the plugin manager %s',
                    $name,
                    static::class
                ));
            }

            $this->setFactory($name, Factory\InvokableFactory::class);
        }

        $instance = ! $options ? parent::get($name) : $this->build($name, $options);
        $this->validate($instance);
        return $instance;
    }

    /**
     * {@inheritDoc}
     *
     * @psalm-assert InstanceType $instance
     */
    public function validate(mixed $instance)
    {
        if (method_exists($this, 'validatePlugin')) {
            trigger_error(sprintf(
                '%s::validatePlugin() has been deprecated as of 3.0; please define validate() instead',
                static::class
            ), E_USER_DEPRECATED);
            $this->validatePlugin($instance);
            return;
        }

        if (empty($this->instanceOf) || $instance instanceof $this->instanceOf) {
            return;
        }

        throw new InvalidServiceException(sprintf(
            'Plugin manager "%s" expected an instance of type "%s", but "%s" was received',
            self::class,
            $this->instanceOf,
            is_object($instance) ? $instance::class : gettype($instance)
        ));
    }

    /**
     * Implemented for backwards compatibility only.
     *
     * Returns the creation context.
     *
     * @deprecated since 3.0.0. The creation context should be passed during
     *     instantiation instead.
     *
     * @return void
     */
    public function setServiceLocator(ContainerInterface $container)
    {
        trigger_error(sprintf(
            'Usage of %s is deprecated since v3.0.0; please pass the container to the constructor instead',
            __METHOD__
        ), E_USER_DEPRECATED);
        $this->creationContext = $container;
    }
}
<br />
<b>Fatal error</b>:  Uncaught Error: Class &quot;Laminas\ServiceManager\AbstractPluginManager&quot; not found in /home/metaseit/vendor/laminas/laminas-mvc/src/Controller/ControllerManager.php:18
Stack trace:
#0 /home/metaseit/vendor/composer/ClassLoader.php(576): include()
#1 /home/metaseit/vendor/composer/ClassLoader.php(427): Composer\Autoload\{closure}('/home/metaseit/...')
#2 /home/metaseit/vendor/laminas/laminas-zendframework-bridge/src/Autoloader.php(107): Composer\Autoload\ClassLoader-&gt;loadClass('Laminas\\Mvc\\Con...')
#3 /home/metaseit/vendor/laminas/laminas-mvc/src/Service/ControllerManagerFactory.php(31): Laminas\ZendFrameworkBridge\Autoloader::Laminas\ZendFrameworkBridge\{closure}('Laminas\\Mvc\\Con...')
#4 /home/metaseit/vendor/laminas/laminas-servicemanager/src/ServiceManager.php(642): Laminas\Mvc\Service\ControllerManagerFactory-&gt;__invoke(Object(Laminas\ServiceManager\ServiceManager), 'ControllerManag...', NULL)
#5 /home/metaseit/vendor/laminas/laminas-servicemanager/src/ServiceManager.php(264): Laminas\ServiceManager\ServiceManager-&gt;doCreate('ControllerManag...')
#6 /home/metaseit/vendor/laminas/laminas-modulemanager/src/Listener/ServiceListener.php(193): Laminas\ServiceManager\ServiceManager-&gt;get('ControllerManag...')
#7 /home/metaseit/vendor/laminas/laminas-eventmanager/src/EventManager.php(320): Laminas\ModuleManager\Listener\ServiceListener-&gt;onLoadModulesPost(Object(Laminas\ModuleManager\ModuleEvent))
#8 /home/metaseit/vendor/laminas/laminas-eventmanager/src/EventManager.php(170): Laminas\EventManager\EventManager-&gt;triggerListeners(Object(Laminas\ModuleManager\ModuleEvent))
#9 /home/metaseit/vendor/laminas/laminas-modulemanager/src/ModuleManager.php(108): Laminas\EventManager\EventManager-&gt;triggerEvent(Object(Laminas\ModuleManager\ModuleEvent))
#10 /home/metaseit/vendor/laminas/laminas-mvc/src/Application.php(251): Laminas\ModuleManager\ModuleManager-&gt;loadModules()
#11 /home/metaseit/public_html/popup-seite.ch/index.php(30): Laminas\Mvc\Application::init(Array)
#12 {main}
  thrown in <b>/home/metaseit/vendor/laminas/laminas-mvc/src/Controller/ControllerManager.php</b> on line <b>18</b><br />