This error was something like this: DevTools failed to load SourceMap: Could not load content for path/bootstrap-toggle.min.js.map: HTTP error: status code 404, net::ERR__HTTP___RESPONSE___CODE__FAILURE.
It was frustrating to see this error because I had no reference to the file which was indicated in the error message: bootstrap-toggle.min.js.map. In other words the WordPress theme was not having any code to use such a file.
I searched the whole WP theme for the file and only found a comment in bootstrap-toggle.min.js file which was referring to the .map file: //# sourceMappingURL=bootstrap-toggle.min.js.map.
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