Javascript file not found

I have a project with a linked javascript file that I've been working on with no problem, but yesterday I started getting an error, "Failed to load resource: the server responded with a status of 404 (Not Found)" whenever I preview the project in a browser or publish it to html.

I'm including the script using an html extension object, with type "Meta tags." The script in the extension is

undefined

and myScript.js is in the extern folder of the project.

I have another project with the same setup, and it is working with no problems. Presumably I changed something somewhere that made it stop working, but I'm banging my head against the wall trying to figure out what it might be. I've also tried making a new file and linking that, in case something in myScript.js is bad, but I get the same error for an empty test.js file.

I'm using Lectora 17. Any ideas on what might keep the html from seeing the js file would be greatly appreciated.

Thanks in advance!

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