Missing origin image

[JimRou]

Hello,

I wanted to test the js cloudimage responsive script for a part of my web site (femto-physique.fr/optique). So for all the page I put in the head :

<link rel="stylesheet" href="https://cdn.scaleflex.it/plugins/js-cloudimage-responsive/latest/js-cloudimage-responsive.min.css?vh=a076ef&func=proxy"></link>

and before the </body> i put

<script src="https://cdn.scaleflex.it/filerobot/js-cloudimage-responsive/lazysizes.min.js"></script>
<script src="https://cdn.scaleflex.it/plugins/js-cloudimage-responsive/latest/js-cloudimage-responsive.min.js"></script>
<script>
	const ciResponsive = new window.CIResponsive({
		token: 'mytoken',
		baseURL: 'https://femto-physique.fr/optique/img/', // optional
		lazyLoading: true                                       // optional
	});

	window.lazySizes.init();
</script>

where i change mytoken to my personnal token
And for the png image i change src to ci-src

.... but it doesn't work as you can see here (see Fig.10).
Could you tell me where is my mystake ?

Thank you
J. Roussel