35e2cb44a5d98414f199673bb0c2689b5b487992.js:212 Uncaught DOMException: Failed to execute 'querySelector' on 'Document': '#9-principles-of-prevention-programming' is not a valid selector.
at HTMLAnchorElement.n (https://beta.wcasa.org/35e2cb44a5d98414f199673bb0c2689b5b487992.js?meteor_js_resource=true:212:15009)