You can try hosting it on Apache and proxying API calls to Traccar.
Find an easiest way.
Just put the old web folder inside the new. Change all the values from  app.min.js       /api   to  http://yourdomain.com/api and websocket  from pathname+'api/socket')   to   /api/socket
And then access  from yourdomain.com/"foldername"
Hello,
I am using a custom UI for traccar. My question is what is the easiest way to be able to have both web apps runing in parallel.
I mean subfolder ow something.
I can see the new version boots the new web app from /web/modern. I tried the same, to put the old app inside the new but not working properly