Is there a forum for leaflet

Hi: I’m wanting help with leaflet howto’s. I completed the Leaflet Quick Start Guide but am having trouble with Leaflet on Mobile.

I’m not seeing the map after I initiated it.

Found my problem with leaflet on mobile tutorial:
this address in the tutorial didn’t work.{z}/{x}/{y}.png

but the address in the quick start guide worked as a replacement{id}/{z}/{x}/{y}.png