The micro app gathering buses possitions from einfo.erzeszow.pl
The app was written few years ago after adding a security layer to the website blocking possibility to gathering data.
When you visit http://einfo.erzeszow.pl/Home/CNR_GetVehicles?r=0A&d=&nb= then you will get 404 (page not found) error. In fact there are data given but the valid header need to be sent.
After deeper investigation @partikus have found the accept lang query header is missing incl. valid number that need to be taken from the evaluated JS code.
npm install
npm run app