Third party JS libraries in production version (Laravel 5.5)

I'm using third party js libraries in my Laravel 5.5 project (leaflet and leaflet-draw). I installed the libraries using npm:

npm install leaflet

npm install leaflet-draw

I added the folowing lines in resources/assets/js/app.js:

require('leaflet');

require('leaflet-draw');

and in resources/assets/sass/app.scss:

@import "~leaflet/dist/leaflet.css";

@import "~leaflet-draw/dist/leaflet.draw.css";

after that, I run:

npm run dev

Assets compile and my application works fine on my localhost (i run basic laravel server with php artisan serve).

I tried deploying this application to server. I deployed it to a subfolder, so the address is: https://mysite.com/laravelapplication

I followed this instruction: https://www.digitalocean.com/community/tutorials/how-to-deploy-a-laravel-application-with-nginx-on-ubuntu-16-04

All routes and urls work fine. I don't get any code errors. But, leaflet and leaflet draw libraries have trouble fetching their icons and fonts. I get these errors:

GET https://mysite.com/fonts/vendor/leaflet-draw/dist/images/spritesheet.svg?fd5728f... 404 (Not found)

GET https://mysite.com/images/vendor/leaflet/dist/images/layers.png?a613745... 404 (Not found)

Looks like the library is searching for fonts and icons in the wrong place. It should look in https://mysite.com/laravelapplication instead of https://mysite.com

Does anyone know why this is happening?