Trying to use this in Ant Design Pro but encountering errors, please help..

[yhrchan]

Ant Design Pro provide a already built admin like template based on Umi.js which is similar to Create React App. I wanted to use this react-org-chart within that based on the example in the folder but encountering errors, been spending 1-2 days already and exhausted my options in figuring out what's the cause. The error is below:

TypeError: Cannot read property 'length' of undefined
init
./node_modules/@unicef/react-org-chart/dist/index.js:19
16 | ***************************/
17 | /! no static exports found /
18 | /! all exports used */

19 | /! ModuleConcatenation bailout: Module is not an ECMAScript module /function(t,e,n){"use strict";(function(e){var r=Object.assign||function(t){for(var e=1;e<arguments.length;e++){var n=arguments[e];for(var r in n)Object.prototype.hasOwnProperty.call(n,r)&&(t[r]=n[r])}return t},i=n(/! d3 /0),o=n(/! ../utils /1),a=o.collapse,s=(o.wrapText,o.helpers,n(/! ../defs/defineBoxShadow /11)),l=n(/! ../defs/defineAvatarClip /12),c=n(/! ./render /13),u=n(/! ./config /22);t.exports={init:function(t){var n=r({},u,t,{treeData:t.data});if(!n.id)return void console.error("react-org-chart: missing id for svg root");var o=n.id,h=n.treeData,f=n.lineType,d=n.margin,p=n.nodeWidth,g=n.nodeHeight,m=n.nodeSpacing,y=n.shouldResize,v=n.zoomInId,w=n.zoomOutId,b=n.zoomExtentId,x=n.loadConfig;n.lineDepthY="angle"==f?g+40:g+60;var L=document.querySelector(o);if(!L)return void console.error("react-org-chart: svg root DOM node not found (id: "+o+")");L.innerHTML="";var A=L.offsetWidth,N=L.offsetHeight;n.tree=i.layout.tree().nodeSize([p+m,g+m]);var S=parseInt(h.children.lengthp/2),=i.select(o).append("svg").attr("id","svg").attr("xmlns","http://www.w3.org/2000/svg").attr("xmlns:xlink","http://www.w3.org/1999/xlink").attr("x","0px").attr("y","0px").attr("xml:space","preserve").attr("viewBox","0 0 "+A+" "+N).attr("enable-background"," new 0 0 "+A+" "+N).attr("width",A).attr("height",N),k=.append("g").attr("transform","translate("+parseInt(S+(A-2S)/2-d.left/2)+",48)");s(,"boxShadow"),l(,"avatarClip",{borderRadius:40}),h.x0=0,h.y0=N/2,h.children.forEach(a),n.svg=k,n.svgroot=,n.elemWidth=A,n.elemHeight=N,n.render=c;var P=i.behavior.zoom().scaleExtent([.1,2]).duration(50).on("zoom",C);function C(){k.attr("transform","translate("+P.translate()+")scale("+P.scale()+")")}function I(t,e){return i.event.preventDefault(),i.transition().duration(350).tween("zoom",(function(){var n=i.interpolate(P.translate(),t),r=i.interpolate(P.scale(),e);return function(t){P.scale(r(t)).translate(n(t)),C()}}))}function F(){if(this.id!==b){i.event.target;var t,e,n,r,o=[A/2,N/2],a=P.scaleExtent(),s=P.translate(),l={x:s[0],y:s[1],k:P.scale()};if(i.event.preventDefault(),t=this.id===v?1:-1,(e=P.scale()(1+.2t))<a[0]||e>a[1])return!1;n=[(o[0]-l.x)/l.k,(o[1]-l.y)/l.k],l.k=e,r=[n[0]*l.k+l.x,n[1]l.k+l.y],l.x+=o[0]-r[0],l.y+=o[1]-r[1],I([l.x,l.y],l.k)}else{var c=x(),u=c.nodeLeftX,h=c.nodeRightX,f=c.nodeY,p=c.elemHeight,m=c.elemWidth,y=u+h,w=f+2g+48,L=m/y-.03,S=p/w-.06,=y>m||w>p?L<S?L:S:1,k=u*+d.left/2;y>m||w>p?L<S?I([k,48],):L>S&&I([k=m/2-d.left/2,48],):I([k=m/2-d.left/2,48],)}}.call(P),P.translate([parseInt(S+(A-2*S)/2-d.left/2),20]),i.select("#"+v).on("click",F),i.select("#"+w).on("click",F),i.select("#"+b).on("click",F);y&&e.addEventListener("resize",(function t(){L?.attr("width",L.offsetWidth).attr("height",L.offsetHeight):e.removeEventListener("resize",t)}));c(n),i.select(o).style("height",N+d.top+d.bottom);var B=document.createElement("div");B.setAttribute("id",o+"-canvas-container"),B.setAttribute("style","display:none;");var E=document.createElement("div");E.setAttribute("id",o+"-svg-container"),E.setAttribute("style","display:none;");var j=document.getElementById("root");j.append(B),j.append(E)}}}).call(this,n(/! ./../../node_modules/webpack/buildin/global.js /3))},
20 | /!***********************************!
21 | !*** (webpack)/buildin/global.js !
22 | ********************************/

Thanks!