DeferJavascript causes "Uncaught ReferenceError: GLightbox is not defined"

[Mor9oth]

As soon as I use the middleware "\RenatoMarinho\LaravelPageSpeed\Middleware\DeferJavascript::class," I got this error: "Uncaught ReferenceError: GLightbox is not defined" As soon as I remove it, the error also is gone.

<script type=text/javascript> const lightbox = GLightbox({ touchNavigation: true, loop: false, closeEffect: 'fade' });

How can I fix that?

[memiljamel]

same issue.