[pasbesoin]

The OP depends upon Javascript for any and all content delivery/rendition. Given the topic at hand, I find this more than a bit ironic.

I gather from the comments that this is some sort of online storage of a copy. That may serve some use cases over the short term.

If you really want to avoid loss or "link rot", maintain your own copy on your own equipment.

I've been around to observe everything from personal interest changes, death, corporate policy changes, ownership transfers, deliberate manipulation... etc. -- you get the idea -- effect the ability to pull even what were formerly considered very stable and long-standing, aka "permanent", resources.

If you want to ensure you have access, save your own copy onto hardware that you own. End of story.