I use:

<script src="https://www.strictly-software.com/scripts/downloads/encoder.js"></script>

and the library isn't downloaded. In the Network tab its header has this warning: Provisional headers are shown . I try

fetch("https://www.strictly-software.com/scripts/downloads/encoder.js")

and I get the error ERR_CERT_DATE_INVALID. Now there are many ways to fix this in browser, but I wonder if this can be solved in JS only?