I want to use add ons simple ruler on ckeditor4 in my Codeigniter4 project. But I receive this kind of error. Already tried to browsing the solution in internet but I can't found the solution.

Uncaught ReferenceError: require is not defined
at ckeditor.js:1335:234
at ckeditor.js:1339:3160

Uncaught TypeError: Cannot read properties of undefined (reading 'split')
at Object.loadPart (ckeditor.js:568:143)
at l (ckeditor.js:279:29)
at a.<anonymous> (ckeditor.js:278:394)
at a.r (ckeditor.js:10:246)
at a.<anonymous> (ckeditor.js:12:91)
at a.CKEDITOR.editor.CKEDITOR.editor.fire (ckeditor.js:13:286)
at a.fireOnce (ckeditor.js:12:251)
at a.CKEDITOR.editor.CKEDITOR.editor.fireOnce (ckeditor.js:13:442)
at k (ckeditor.js:276:322)
at Object.<anonymous> (ckeditor.js:276:442)

The code from error require is not defined ckeditor.js:1335 is

window.noUiSlider=require("nouislider");window.$||(window.$=require("jquery"));

And code from error cannot read properties of undefined (reading 'split') ckeditor.js:568 is

split(",")[0]?CKEDITOR.scriptLoader.load(CKEDITOR.getUrl(a()+"skin.js"),function(){b(c,d)}):b(c,d)},getPath:function(a){return CKEDITOR.getUrl(d(a))},icons:{},addIcon:function(a,b,c,d){a=a.toLowerCase();this.icons[a]||(this.icons[a]={path:b,offset:c||0,bgsize:d||"16px"})},getIconStyle:function(a,b,c,d,e){var f;a&&(a=a.toLowerCase(),b&&(f=this.icons[a+"-rtl"]),

I confused because I'm using the feature CKEditor4 builder online and while using those add ons, always error. But if I remove the add ons(simple ruler), the error is gone. I already put jquery on my assets. And I dont know why this error happen. Are anyone have the solution of this? Thanks.