Javascript error on mobile

I'm getting the following error on my Samsung Galaxy Note 10+ when visiting our easysocial 4 beta testing site in google chrome

site-4.0.0.min.js:48 Uncaught TypeError: Cannot read property 'addEventListener' of null

    at j (site-4.0.0.min.js:48)

    at a.ob (site-4.0.0.min.js:48)

    at a._initAddons (site-4.0.0.min.js:48)

    at new a (site-4.0.0.min.js:48)

    at http://social.anara.dev/:1115

    at HTMLDocument.<anonymous> (site-4.0.0.min.js:8)

    at j (site-4.0.0.min.js:2)

    at Object.fireWith [as resolveWith] (site-4.0.0.min.js:2)

    at Function.ready (site-4.0.0.min.js:2)

    at HTMLDocument.K (site-4.0.0.min.js:1)

looking at the offending code here is s snippet of where its null

a.addEventListener("touchmove",function(a){b="",a.movementY>0?b="down":a.movementY<0&&(b="up")}),{get:function(){return b}}}function k(a){return{}.toString.call(a).match(/\s([a-zA-Z]+)/)[1].toLowerCase()}function l(a,b,c){if("function"==typeof b){var d=b.call(a);if("undefined"!=typeof d)return d}return null!==b&&"function"!=typeof b&&"undefined"!=typeof b||"undefined"==typeof c?b:c}function m(a,b,c){var d=!1,e=function(c){("undefined"==typeof c||c.target===a)&&(d||(a.removeEventListener("transitionend",e),a.removeEventListener("webkitTransitionEnd",e),b.call(a)),d=!0)};a.addEventListener("transitionend",e),a.addEventListener("webkitTransitionEnd",e),setTimeout(e,1.1*c)}function n(){return"mm-"+o++}