RoboHelp 2020 > Frameless HTML > Output warnings: "map" files

Hello! I get the following console errors when outputting Frameless HTML on Chrome:

DevTools failed to load SourceMap: Could not load content for https://docs.flightsimulator.com/html/template/Orange/orange.css.map: HTTP error: status code 404, net::ERR_HTTP_RESPONSE_CODE_FAILURE
DevTools failed to load SourceMap: Could not load content for https://docs.flightsimulator.com/html/template/scripts/topicpage.js.map: HTTP error: status code 404, net::ERR_HTTP_RESPONSE_CODE_FAILURE
DevTools failed to load SourceMap: Could not load content for https://docs.flightsimulator.com/html/template/Orange/orange.css.map: HTTP error: status code 404, net::ERR_HTTP_RESPONSE_CODE_FAILURE

On Firfox I only get one error about the "orange.css.map".

I have done a lot of searching and not found any explanation as to what these files are nor how to avoid getting these warnings. They don't seem to affect the pages, but I'm wondering if they may be related to other issues I have. Does anyone know what these "map" files are, and how to fix/remove the warnings I'm getting?

Note that even with the RH sample files I get these warnings so it's not related to my project, but rather to the frameless skin output (I have tested them all, and they all give this issue).