URLs to clean.
	 * @param string $lang The language to clean.
	 */
	public function preload_after_clean_term( $term, $purge_urls, $lang ) {
		if ( ! $this->options->get( 'manual_preload' ) ) {
			return;
		}

		// Add Homepage URL to $purge_urls for preload.
		array_push( $purge_urls, get_rocket_i18n_home_url( $lang ) );

		$purge_urls = array_filter( $purge_urls );

		$this->urls = array_merge( $this->urls, $purge_urls );
	}

	/**
	 * Starts the partial preload process if there is any URLs saved
	 *
	 * @since 3.2.1
	 * @author Remy Perona
	 *
	 * @return void
	 */
	public function maybe_dispatch() {
		if ( wp_doing_ajax() ) {
			return;
		}

		if ( empty( $this->urls ) ) {
			return;
		}

		$this->urls = array_unique( $this->urls );

		/**
		 * Limit the number of URLs to preload.
		 * The value may change in the future, depending on the results.
		 *
		 * @since  3.4
		 * @author Grégory Viguier
		 *
		 * @param int $limit Maximum number of URLs to preload at once.
		 */
		$limit  = (int) apply_filters( 'rocket_preload_limit_number', 100 );
		$count  = 0;
		$mobile = $this->partial_preload->is_mobile_preload_enabled();

		foreach ( $this->urls as $url ) {
			$path = wp_parse_url( $url, PHP_URL_PATH );

			if ( isset( $path ) && preg_match( '#^(' . \get_rocket_cache_reject_uri() . ')$#', $path ) ) {
				continue;
			}

			$this->partial_preload->push_to_queue( $url );

			if ( $mobile ) {
				$this->partial_preload->push_to_queue(
					[
						'url'    => $url,
						'mobile' => true,
					]
				);
			}

			++$count;

			if ( $count >= $limit ) {
				break;
			}
		}

		$this->partial_preload->save()->dispatch();
	}
}
<br />
<b>Fatal error</b>:  Uncaught Error: Call to a member function withArgument() on null in /home/payon/public_html/wp-content/plugins/wp-rocket/inc/Engine/Preload/ServiceProvider.php:60
Stack trace:
#0 /home/payon/public_html/wp-content/plugins/wp-rocket/vendor/league/container/src/ServiceProvider/ServiceProviderAggregate.php(84): WP_Rocket\Engine\Preload\ServiceProvider-&gt;register()
#1 /home/payon/public_html/wp-content/plugins/wp-rocket/vendor/league/container/src/Container.php(88): League\Container\ServiceProvider\ServiceProviderAggregate-&gt;register('preload_subscri...')
#2 /home/payon/public_html/wp-content/plugins/wp-rocket/inc/classes/class-plugin.php(186): League\Container\Container-&gt;get('preload_subscri...')
#3 /home/payon/public_html/wp-content/plugins/wp-rocket/inc/main.php(40): WP_Rocket\Plugin-&gt;load()
#4 /home/payon/public_html/wp-includes/class-wp-hook.php(308): rocket_init('')
#5 /home/payon/public_html/wp-includes/class-wp-hook.php(332): WP_Hook-&gt;apply_filters(NULL, Array)
#6 /home/payon/public_html/wp-includes/plugin. in <b>/home/payon/public_html/wp-content/plugins/wp-rocket/inc/Engine/Preload/ServiceProvider.php</b> on line <b>60</b><br />