13927131347 This can be ignored. The browser only tries to load *.map files when developer tools are open, and *.map files are only used to map minified Javascript and CSS to source files for debugging. Also, this only happens when you are self-hosting assets, because the *.map files are not there. As you can see yourself, there are no actual errors in the application.
13927131347 Incorrect requests can affect user access speed.
As noted, these files will load only when browser developer tools is open, and will definitely not affect user speed.