Site description on google
Hi there,
This seems like it's the title of your site is not set. If you are using Wave, you can do that in your settings and define a site title and description:
Then if you inspect your HTML, you should see the title in there, eg:
After that it might take a while for google to crawl your website again. You can sing up for the Google search console to speed that up:
https://search.google.com/search-console/about
Let me know how it goes!