I get the following error after using jekyll serve
[2018-07-06 09:42:43] INFO WEBrick::HTTPServer#start: pid=7146 port=4000
Server running... press ctrl-c to stop.
[2018-07-06 09:43:03] DEBUG accept: 127.0.0.1:45172
[2018-07-06 09:43:03] DEBUG Jekyll::Commands::Serve::Servlet is invoked.
[2018-07-06 09:43:03] DEBUG Jekyll::Commands::Serve::Servlet is invoked.
[2018-07-06 09:43:03] DEBUG Jekyll::Commands::Serve::Servlet is invoked.
[2018-07-06 09:43:04] DEBUG Jekyll::Commands::Serve::Servlet is invoked.
[2018-07-06 09:43:04] ERROR `/sw.js' not found.
[2018-07-06 09:43:04] DEBUG close: 127.0.0.1:45172
The error occurs every time I reload the page in the Firefox browser, not during build.
Where does that come from? I couldn’t find any file in my project directory that contains sw.js
I use the minima theme