How to fix broken browsersync?

Question

npm

Why is browsersync giving this error?

Uncaught TypeError: Cannot read property 'bind' of undefined
    at new t (browser-sync-client.js?v=2.26.7:16)
    at Object.<anonymous> (browser-sync-client.js?v=2.26.7:16)
    at Object.socket (browser-sync-client.js?v=2.26.7:16)
    at e (browser-sync-client.js?v=2.26.7:9)
    at Object.socket (browser-sync-client.js?v=2.26.7:16)
    at e (browser-sync-client.js?v=2.26.7:9)
    at Object.socket (browser-sync-client.js?v=2.26.7:16)
    at e (browser-sync-client.js?v=2.26.7:9)
    at Object.socket (browser-sync-client.js?v=2.26.7:16)
    at e (browser-sync-client.js?v=2.26.7:9)

here is a link to my gulpfile https://github.com/zapaza/gulp-new-scss/blob/maste...