Run button is not working

21:55:55.678 TypeError: window.codeworldEditor is undefined
    compile https://code.world/js/codeworld.js:1149
    jQuery 8
    attachEventListeners https://code.world/js/codeworld.js:82
    init https://code.world/js/codeworld.js:206
    async* https://code.world/js/codeworld.js:55
lockdown-install.js:1:103865

browser: firefox
os: osx
