I don't get the tiles in the right reference system

[Leverkusen]

I am setting up a webapplication and want to convert .grd files to tiles that can be read by Leaflet.

This example can be easily followed by using the files and putting them under a folder called /data, as you can see in the code, that is needed.

here are the needed files: aoa_result_2.zip

I had to set the routes with tiler_options because there where some errors with systemvariables and the paths. But it runs and there is a output. But the tiles are obviously not in the right reference system. This is my code (remember to install and load the package):

tiler_options(osgeo4w = "C:/OSGeo4W64/OSGeo4W.bat", python="C:/Users/**_USERNAME_**/AppData/Local/Programs/Python/Python37/python.exe")

tile(file= 'data/aoa_result_2.grd',
     tiles= 'layers/aoa_result',
     zoom="10-13",
     viewer= TRUE,
)

Even the passed viewer can't display the layer correctly. The XML file shows that the EPSG is 3857 but I guess that is not right for leaflet. Shouldn't it be EPSG:4326 instead?

<?xml version="1.0" encoding="utf-8"?>
    <TileMap version="1.0.0" tilemapservice="http://tms.osgeo.org/1.0.0">
      <Title>tmp_raster.tif</Title>
      <Abstract></Abstract>
      <SRS>EPSG:3857</SRS>
      <BoundingBox minx="7.40000709521776" miny="51.85465878258405" maxx="7.82132047624863" maxy="52.06491340494047"/>
      <Origin x="7.40000709521776" y="51.85465878258405"/>
      <TileFormat width="256" height="256" mime-type="image/png" extension="png"/>
      <TileSets profile="mercator">
        <TileSet href="10" units-per-pixel="152.87405654296876" order="10"/>
        <TileSet href="11" units-per-pixel="76.43702827148438" order="11"/>
        <TileSet href="12" units-per-pixel="38.21851413574219" order="12"/>
        <TileSet href="13" units-per-pixel="19.10925706787109" order="13"/>
      </TileSets>
    </TileMap>

I tried some reprojections but always got the same refsys and can't display it in my leaflet app nor in the viewere.

Thank you for helping

[Leverkusen]

It seems that i just forgot about the point that tiler generates TMS-Tiles. I thought i checked that. Now all is working. Just added the tms="true" param to my react-leaflet TileLayer.

  <TileLayer
    attribution="&copy;  contributors"
    url={
      "/static/layers/" +
      currentProject.projectname +
      "/{z}/{x}/{y}.png"
    }
    tms="true"
    minZoom="10"
    maxZoom="18"
  />

But still the generated viewer does not show the tiles.