Fatal error: Uncaught UnexpectedValueException: RecursiveDirectoryIterator

Hello,

I’ve been receiving a fatal exception in mss_dir_size when it tries to access a file path, instead of a folder path.

The two lines added below fixed my issue.

	function mss_dir_size( $path ) {
		$path .= '.';
		$path = pathinfo( $path , PATHINFO_DIRNAME );
		if ( false === ( $total_size = get_transient( $path ) ) ) {

			$total_size = 0;
			foreach ( new RecursiveIteratorIterator( new RecursiveDirectoryIterator( $path ) ) as $file ) {
				$total_size += $file->getSize();
			}

			// Set transient, expires in 1 hour
			set_transient( $path, $total_size, 1 * HOUR_IN_SECONDS );

			return $total_size;

		} else {

			return $total_size;
		}
	}