How to compile mvn project into bold jar?

Question

Java

When launched through Idea, everything works, namely the sound on the page, but when I compile it with maven, everything works except for the sound. Writes the following error:
Request URL: localhost:8080/voice/%D0%90.mp3
Request Method: GET
Status Code: 404
Remote Address: [::1]:8080
Referrer Policy: no-referrer-when-downgrade I
specify the path like this way in the js script target.setAttribute('src', nameVoice2);
Again, I repeat, everything works correctly when I run the project through idea, but when the same mvn clean package project does not work and gives this error that it allegedly cannot find this file