[Plugin: WordPress SEO by Yoast] Undefined index: title-page in class-frontend.php on line 99

On the ‘home’ page, if SEO title is not set, and the Page Title template is not set either then I get
Notice: Undefined index: title-page in … \wordpress-seo\frontend\class-frontend.php on line 99

The workaround is to either click on Generate SEO title on the home page OR set the page Title template.

But it is a bit annoying since it occurs immediately after installing WordPress-SEO.

https://www.ads-software.com/extend/plugins/wordpress-seo/