rityQueue> $class
     * @return $this
     */
    public function setInternalQueueClass($class)
    {
        /** @psalm-suppress RedundantCastGivenDocblockType */
        $this->queueClass = (string) $class;
        return $this;
    }

    /**
     * Does the queue contain the given datum?
     *
     * @param  TValue $datum
     * @return bool
     */
    public function contains($datum)
    {
        foreach ($this->items as $item) {
            if ($item['data'] === $datum) {
                return true;
            }
        }
        return false;
    }

    /**
     * Does the queue have an item with the given priority?
     *
     * @param  TPriority $priority
     * @return bool
     */
    public function hasPriority($priority)
    {
        foreach ($this->items as $item) {
            if ($item['priority'] === $priority) {
                return true;
            }
        }
        return false;
    }

    /**
     * Get the inner priority queue instance
     *
     * @throws Exception\DomainException
     * @return \SplPriorityQueue<TPriority, TValue>
     * @psalm-assert !null $this->queue
     */
    protected function getQueue()
    {
        if (null === $this->queue) {
            /** @psalm-suppress UnsafeInstantiation */
            $queue = new $this->queueClass();
            /** @psalm-var \SplPriorityQueue<TPriority, TValue> $queue */
            $this->queue = $queue;
            /** @psalm-suppress DocblockTypeContradiction */
            if (! $this->queue instanceof \SplPriorityQueue) {
                throw new Exception\DomainException(sprintf(
                    'PriorityQueue expects an internal queue of type SplPriorityQueue; received "%s"',
                    $this->queue::class
                ));
            }
        }

        return $this->queue;
    }

    /**
     * Add support for deep cloning
     *
     * @return void
     */
    public function __clone()
    {
        if (null !== $this->queue) {
            $this->queue = clone $this->queue;
        }
    }
}
rityQueue> $class
     * @return $this
     */
    public function setInternalQueueClass($class)
    {
        /** @psalm-suppress RedundantCastGivenDocblockType */
        $this->queueClass = (string) $class;
        return $this;
    }

    /**
     * Does the queue contain the given datum?
     *
     * @param  TValue $datum
     * @return bool
     */
    public function contains($datum)
    {
        foreach ($this->items as $item) {
            if ($item['data'] === $datum) {
                return true;
            }
        }
        return false;
    }

    /**
     * Does the queue have an item with the given priority?
     *
     * @param  TPriority $priority
     * @return bool
     */
    public function hasPriority($priority)
    {
        foreach ($this->items as $item) {
            if ($item['priority'] === $priority) {
                return true;
            }
        }
        return false;
    }

    /**
     * Get the inner priority queue instance
     *
     * @throws Exception\DomainException
     * @return \SplPriorityQueue<TPriority, TValue>
     * @psalm-assert !null $this->queue
     */
    protected function getQueue()
    {
        if (null === $this->queue) {
            /** @psalm-suppress UnsafeInstantiation */
            $queue = new $this->queueClass();
            /** @psalm-var \SplPriorityQueue<TPriority, TValue> $queue */
            $this->queue = $queue;
            /** @psalm-suppress DocblockTypeContradiction */
            if (! $this->queue instanceof \SplPriorityQueue) {
                throw new Exception\DomainException(sprintf(
                    'PriorityQueue expects an internal queue of type SplPriorityQueue; received "%s"',
                    $this->queue::class
                ));
            }
        }

        return $this->queue;
    }

    /**
     * Add support for deep cloning
     *
     * @return void
     */
    public function __clone()
    {
        if (null !== $this->queue) {
            $this->queue = clone $this->queue;
        }
    }
}
<br />
<b>Fatal error</b>:  Uncaught Error: Class &quot;Laminas\Stdlib\PriorityQueue&quot; not found in /home/metaseit/vendor/laminas/laminas-view/src/Resolver/AggregateResolver.php:53
Stack trace:
#0 /home/metaseit/vendor/laminas/laminas-mvc/src/Service/ViewResolverFactory.php(25): Laminas\View\Resolver\AggregateResolver-&gt;__construct()
#1 /home/metaseit/vendor/laminas/laminas-servicemanager/src/ServiceManager.php(642): Laminas\Mvc\Service\ViewResolverFactory-&gt;__invoke(Object(Laminas\ServiceManager\ServiceManager), 'ViewResolver', NULL)
#2 /home/metaseit/vendor/laminas/laminas-servicemanager/src/ServiceManager.php(264): Laminas\ServiceManager\ServiceManager-&gt;doCreate('ViewResolver')
#3 /home/metaseit/vendor/laminas/laminas-mvc/src/Service/ViewPhpRendererFactory.php(21): Laminas\ServiceManager\ServiceManager-&gt;get('ViewResolver')
#4 /home/metaseit/vendor/laminas/laminas-servicemanager/src/ServiceManager.php(642): Laminas\Mvc\Service\ViewPhpRendererFactory-&gt;__invoke(Object(Laminas\ServiceManager\ServiceManager), 'Laminas\\View\\Re...', NULL)
#5 /home/metaseit/vendor/laminas/laminas-servicemanager/src/ServiceManager.php(264): Laminas\ServiceManager\ServiceManager-&gt;doCreate('Laminas\\View\\Re...')
#6 /home/metaseit/vendor/laminas/laminas-mvc/src/Service/ViewPhpRendererStrategyFactory.php(20): Laminas\ServiceManager\ServiceManager-&gt;get('Laminas\\View\\Re...')
#7 /home/metaseit/vendor/laminas/laminas-servicemanager/src/ServiceManager.php(642): Laminas\Mvc\Service\ViewPhpRendererStrategyFactory-&gt;__invoke(Object(Laminas\ServiceManager\ServiceManager), 'Laminas\\View\\St...', NULL)
#8 /home/metaseit/vendor/laminas/laminas-servicemanager/src/ServiceManager.php(264): Laminas\ServiceManager\ServiceManager-&gt;doCreate('Laminas\\View\\St...')
#9 /home/metaseit/vendor/laminas/laminas-mvc/src/Service/ViewFactory.php(24): Laminas\ServiceManager\ServiceManager-&gt;get('Laminas\\View\\St...')
#10 /home/metaseit/vendor/laminas/laminas-servicemanager/src/ServiceManager.php(642): Laminas\Mvc\Service\ViewFactory-&gt;__invoke(Object(Laminas\ServiceManager\ServiceManager), 'Laminas\\View\\Vi...', NULL)
#11 /home/metaseit/vendor/laminas/laminas-servicemanager/src/ServiceManager.php(264): Laminas\ServiceManager\ServiceManager-&gt;doCreate('Laminas\\View\\Vi...')
#12 /home/metaseit/vendor/laminas/laminas-mvc/src/Service/HttpDefaultRenderingStrategyFactory.php(22): Laminas\ServiceManager\ServiceManager-&gt;get('Laminas\\View\\Vi...')
#13 /home/metaseit/vendor/laminas/laminas-servicemanager/src/ServiceManager.php(642): Laminas\Mvc\Service\HttpDefaultRenderingStrategyFactory-&gt;__invoke(Object(Laminas\ServiceManager\ServiceManager), 'Laminas\\Mvc\\Vie...', NULL)
#14 /home/metaseit/vendor/laminas/laminas-servicemanager/src/ServiceManager.php(264): Laminas\ServiceManager\ServiceManager-&gt;doCreate('Laminas\\Mvc\\Vie...')
#15 /home/metaseit/vendor/laminas/laminas-mvc/src/View/Http/ViewManager.php(99): Laminas\ServiceManager\ServiceManager-&gt;get('HttpDefaultRend...')
#16 /home/metaseit/vendor/laminas/laminas-eventmanager/src/EventManager.php(320): Laminas\Mvc\View\Http\ViewManager-&gt;onBootstrap(Object(Laminas\Mvc\MvcEvent))
#17 /home/metaseit/vendor/laminas/laminas-eventmanager/src/EventManager.php(170): Laminas\EventManager\EventManager-&gt;triggerListeners(Object(Laminas\Mvc\MvcEvent))
#18 /home/metaseit/vendor/laminas/laminas-mvc/src/Application.php(148): Laminas\EventManager\EventManager-&gt;triggerEvent(Object(Laminas\Mvc\MvcEvent))
#19 /home/metaseit/vendor/laminas/laminas-mvc/src/Application.php(260): Laminas\Mvc\Application-&gt;bootstrap(Array)
#20 /home/metaseit/public_html/popup-seite.ch/index.php(30): Laminas\Mvc\Application::init(Array)
#21 {main}
  thrown in <b>/home/metaseit/vendor/laminas/laminas-view/src/Resolver/AggregateResolver.php</b> on line <b>53</b><br />