Duplicate pixel id

Can someone please help i have an issue – my ex devloper install manualy pixel code event in my site and every time i try to do with my setup event tools it is conflictiong how do i know if my dev did it right sorry i dont have any knoledge in code i think i have a duplicate id int issue…

i did copy from my source page can someone translate it or can point an issue in the code and help me?

<!– Facebook Pixel Code –>
<script type=’text/javascript’>
!function(f,b,e,v,n,t,s){if(f.fbq)return;n=f.fbq=function(){n.callMethod?
n.callMethod.apply(n,arguments):n.queue.push(arguments)};if(!f._fbq)f._fbq=n;
n.push=n;n.loaded=!0;n.version=’2.0′;n.queue=[];t=b.createElement(e);t.async=!0;
t.src=v;s=b.getElementsByTagName(e)[0];s.parentNode.insertBefore(t,s)}(window,
document,’script’,’https://connect.facebook.net/en_US/fbevents.js&#8217;);
</script>
<!– End Facebook Pixel Code –>
<script type=’text/javascript’>
fbq(‘init’, ‘**************’, {
“em”: “**********”,
“fn”: “***”,
“ln”: “***”
}, {
“agent”: “wordpress-5.4.2-2.1.0″
});
</script><script type=’text/javascript’>
fbq(‘track’, ‘PageView’, []);
</script>
<!– Facebook Pixel Code –>
<noscript>
<img height=”1″ width=”1″ style=”display:none” alt=”fbpx”
src=”https://www.facebook.com/tr?id=***********&ev=PageView&noscript=1&#8243; />
</noscript>
<!– End Facebook Pixel Code –>