Error when summary is emtpy

Hi, after last upgrade I have this error when I call {{ page.summary }} and page has not text or summary (empty pages, ie modular pages):

An exception has been thrown during the rendering of a template ("DOMDocument::loadHTML(): Empty string supplied as input")

Right. Fixed in https://github.com/getgrav/grav/commit/9a68f0784d333ab094b7bb51fa9c807be5e87c55