Bootstrap accordion not working, how to solve the problem?

Question

css

I decided to use accordion (I used it dozens of times and everything was always ok), but this time some kind of nonsense comes out, I have already shoveled everything, but I can’t find the reason why it doesn’t work. Maybe I'm missing something? Help me to understand. Thank you. Everything works on jsfiddle.
project , just threw a test accordion and it doesn’t work.
The assembly works through gulp, and has been working for a long time, all plugins and libraries are connected .. the
console swears:

Failed to parse SourceMap: martynuk.esy.es/js/jquery.min.map

Answer 1

stackoverflow.com/questions/36133715/google-chrome...