Hey there,
we have this bike ride tutorial on our doc site, and there is the section "Customize the front page"
beneath the headding "Render a single view - Create the ride view" there's a typo in line 7, where a <h3> Tag is opend and tried to be closed with an </h2>.
I don't have access to it, otherwise i'd do it myself

Best regards,
Philip from Corporate IT