^^&&^^

Edit File: ContainerAwareTrait.php

<?php declare(strict_types=1);

namespace WP_Rocket\Dependencies\League\Container;

use WP_Rocket\Dependencies\League\Container\Exception\ContainerException;
use WP_Rocket\Dependencies\Psr\Container\ContainerInterface;

trait ContainerAwareTrait
{
    /**
     * @var ContainerInterface
     */
    protected $container;

/**
     * @var Container
     */
    protected $leagueContainer;

/**
     * Set a container.
     *
     * @param ContainerInterface $container
     *
     * @return ContainerAwareInterface
     */
    public function setContainer(ContainerInterface $container) : ContainerAwareInterface
    {
        $this->container = $container;

return $this;
    }

/**
     * Get the container.
     *
     * @return ContainerInterface
     */
    public function getContainer() : ContainerInterface
    {
        if ($this->container instanceof ContainerInterface) {
            return $this->container;
        }

throw new ContainerException('No container implementation has been set.');
    }

/**
     * Set a container.
     *
     * @param Container $container
     *
     * @return self
     */
    public function setLeagueContainer(Container $container) : ContainerAwareInterface
    {
        $this->container = $container;
        $this->leagueContainer = $container;

return $this;
    }

/**
     * Get the container.
     *
     * @return Container
     */
    public function getLeagueContainer() : Container
    {
        if ($this->leagueContainer instanceof Container) {
            return $this->leagueContainer;
        }

throw new ContainerException('No container implementation has been set.');
    }
}