Ionic 3 how to add tawk chat

Ionic Framework ionic-v3
1 
<body>
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<!--Start of Tawk.to Script-->
 <script type="text/javascript">
var Tawk_API=Tawk_API||{}, Tawk_LoadStart=new Date();
(function(){
 var s1=document.createElement("script"),s0=document.getElementsByTagName("script")[0];
s1.async=true;
s1.src='https://embed.tawk.to/5968515a6edc1c10b0345ef8/default';
s1.charset='UTF-8';
s1.setAttribute('crossorigin','*');
 s0.parentNode.insertBefore(s1,s0);
})();
</script>
<!--End of Tawk.to Script-->
</body>

ionic cordova emulate android --livereload work

ionic cordova emulate android not working

what to do