ger $counter Added to retry 3 times if the request fails.
	 *
	 * @return array            The analisys result.
	 */
	public function run_analysis( $url, $device = 'desktop', $counter = 0 ) {
		// Try to get the analysis 3 times and then bail.
		if ( 3 === $counter ) {
			return false;
		}

		$full_url = home_url( '/' ) . trim( $url, '/' );
		// Hit the url, so it can be cached, when Google Api make the request.
		if ( 0 === $counter ) {
			wp_remote_get( $full_url );
		}

		// Make the request.
		$response = wp_remote_get(
			'https://www.googleapis.com/pagespeedonline/v5/runPagespeed?url=' . $full_url . '&locale=' . get_locale() . '&strategy=' . $device,
			array(
				'timeout' => 15,
			)
		);

		// Make another request if the previous fail.
		if ( is_wp_error( $response ) || 200 !== wp_remote_retrieve_response_code( $response ) ) {

			$counter++;
			return $this->run_analysis( $url, $device, $counter );
		}

		// Decode the response.
		$response = json_decode( $response['body'], true );

		// Return the analysis.
		$items = $this->process_analysis( $response );
		$items['device'] = $device;

		// Save the test results in the database.
		$this->save_test_result( $items );

		return $items;
	}

	/**
	 * Get the pre-migration speed results.
	 *
	 * @since  5.7.13
	 *
	 * @return bool/string False if the file is non existing/The array containing the speed-test results.
	 */
	public function check_for_premigration_test() {
		global $wp_filesystem;
		// Bail if the file does not exist.
		if ( ! file_exists( Helper_Service::get_uploads_dir() . '/pagespeed_results.json' ) ) {
			return false;
		}
		// Return the string containing the pre-migration speed test.
		$pre_migration_result = json_decode( $wp_filesystem->get_contents( Helper_Service::get_uploads_dir() . '/pagespeed_results.json' ), true );

		// Bail if json cannot be decoded or if the encoded data is deeper than the nesting limit.
		if ( false === (bool) $pre_migration_result ) {
			// Delete the file so we don't try to decode it upon future activation.
			$wp_filesystem->delete( Helper_Service::get_uploads_dir() . '/pagespeed_results.json' );
			return false;
		}

		$data = array_merge( $this->process_analysis( $pre_migration_result ), array( 'device' => 'desktop' ) );

		// Save the processed analysis in the database.
		add_option( 'sgo_pre_migration_speed_test', $data, '', false );

		// Remove the file from the folder.
		$wp_filesystem->delete( Helper_Service::get_uploads_dir() . '/pagespeed_results.json' );
	}

}
<br />
<b>Fatal error</b>:  Uncaught Error: Class &quot;SiteGround_Optimizer\Analysis\Analysis&quot; not found in /var/www/vhosts/casainfotech.co.nz/httpdocs/wp-content/plugins/sg-cachepress/core/Rest/Rest_Helper_Options.php:89
Stack trace:
#0 /var/www/vhosts/casainfotech.co.nz/httpdocs/wp-content/plugins/sg-cachepress/core/Helper/Factory_Trait.php(32): SiteGround_Optimizer\Rest\Rest_Helper_Options-&gt;__construct()
#1 /var/www/vhosts/casainfotech.co.nz/httpdocs/wp-content/plugins/sg-cachepress/core/Rest/Rest.php(130): SiteGround_Optimizer\Rest\Rest-&gt;factory()
#2 /var/www/vhosts/casainfotech.co.nz/httpdocs/wp-content/plugins/sg-cachepress/core/Rest/Rest.php(120): SiteGround_Optimizer\Rest\Rest-&gt;load_dependencies()
#3 /var/www/vhosts/casainfotech.co.nz/httpdocs/wp-content/plugins/sg-cachepress/core/Helper/Factory_Trait.php(32): SiteGround_Optimizer\Rest\Rest-&gt;__construct()
#4 /var/www/vhosts/casainfotech.co.nz/httpdocs/wp-content/plugins/sg-cachepress/core/Loader/Loader.php(208): SiteGround_Optimizer\Loader\Loader-&gt;factory()
#5 /var/www/vhosts/casainfotech.co.nz/httpdocs/wp-content/plugins/sg-cachepress/core/Loader/Loader.php(118): SiteGround_Optimizer\Loader\Loader-&gt;load_dependencies()
#6 /var/www/vhosts/casainfotech.co.nz/httpdocs/wp-content/plugins/sg-cachepress/sg-cachepress.php(72): SiteGround_Optimizer\Loader\Loader-&gt;__construct()
#7 /var/www/vhosts/casainfotech.co.nz/httpdocs/wp-settings.php(517): include_once('...')
#8 /var/www/vhosts/casainfotech.co.nz/httpdocs/wp-config.php(87): require_once('...')
#9 /var/www/vhosts/casainfotech.co.nz/httpdocs/wp-load.php(50): require_once('...')
#10 /var/www/vhosts/casainfotech.co.nz/httpdocs/wp-blog-header.php(13): require_once('...')
#11 /var/www/vhosts/casainfotech.co.nz/httpdocs/index.php(17): require('...')
#12 {main}
  thrown in <b>/var/www/vhosts/casainfotech.co.nz/httpdocs/wp-content/plugins/sg-cachepress/core/Rest/Rest_Helper_Options.php</b> on line <b>89</b><br />