When I run the pages locally, on the PC, I get no unexpected errors, so it is not a syntax error or similar on the content itself.
When I run the pages on the NODEMCU, and repeatedly refresh, the .js files will, perhaps one time out of every 5 or 10 refreshes, load correctly. The other times, ALWAYS, I get the ERR_INVALID_HTTP_RESPONSE on one of the .js files. The two pages that load two .js files are consistently less reliable than the other two which load only one .js file each.
Is there a way to SEE the responses coming from the server on the script file loads, since the browser seems to not like the response it's getting?
Being FAR less than an HTML expert, I'm completely at a loss here....