mvt vector tiles on showing on MapboxGL - mapbox-gl-js

Question

I followed
https://medium.com/#mrgrantanderson/https-medium-com-serving-vector-tiles-from-django-38c705f6
to serve the mvt tiles to the mapbox from geoDjango.
With running query
cursor.execute("SELECT ST_AsMVT(tile) FROM (SELECT osm_id, building, ST_AsMVTGeom(geom, TileBBox(%s, %s, %s, 3857)) FROM nepal_khokanabuildings ) AS tile", [zoom, x, y])
as my model project is ESPG:3857
The Vectors don't seem to load up on the map, the api request is working fine.
I also tried serving vector files from Geoserver no luck either.
Here is my JS File
var map = new mapboxgl.Map({
container: 'map',
style: 'mapbox://styles/mapbox/light-v10',
zoom: 12,
center: [85.294688,27.634106],
});
var mapillarySource = {
type: 'vector',
tiles: [
'http://0.0.0.0:8000/nepal/api/v1/data/nepal/{z}/{x}/{y}.mvt'
],
minzoom: 0,
maxzoom: 14
};
map.on('load', function() {
map.addSource('mapillary', mapillarySource);
map.addLayer({
'id': 'mapillary',
'type': 'fill',
'source': 'mapillary',
'source-layer': 'water',
'paint': {
"fill-color": "#00ffff"
}
});
});
map.addControl(new mapboxgl.NavigationControl());
</script>

Answer 1

There are lots of problems that can manifest themselves as "my layers don't show".
You can check each of these things:
is the layer being created before the map is ready? (wait for "load" event)
are the correct tile requests being generated?
are those requests succeeding?
are they returning actual .pbf files?
do they contain data in the right location, and in the right projection?
do they contain a layer with the name you expect? ('water' in this case)
do they contain data of the type you expect? (polygons in this case)
I am curious about the 0.0.0.0 host, but also suspect that the layer name may not be right.
If your tile requests are succeeding, you can try using https://stevage.github.io/vector-inspector/ to inspect them, although you may have issues with that page being served on HTTPS and your local tiles being on HTTP.

Answer 2

Use Following ,
"id": "postgis-tiles-layer",
"source-layer": "default",