Cannot download 03s gebco data

[FilLTP89]

Description of the problem

The edit in load_remote_dataset.py, removing the lines:

fname = f"@{prefix}_{resolution}_{reg}"
    kind = "image" if name in {"earth_day", "earth_night"} else "grid"
    kwdict = {"R": region, "T": {"grid": "g", "image": "i"}[kind]}
    with Session() as lib:
        with lib.virtualfile_out(kind=kind) as voutgrd:
            lib.call_module(
                module="read",
                args=[fname, voutgrd, *build_arg_list(kwdict)],
            )
            grid = lib.virtualfile_to_raster(kind=kind, outgrid=None, vfname=voutgrd)

    # Full path to the grid if not tiled grids.
    source = which(fname, download="a") if not resinfo.tiled else None
    # Manually add source to xarray.DataArray encoding to make the GMT accessors work.
    if source:
        grid.encoding["source"] = source

and replaced them with:

fname = f"@{prefix}_{resolution}_{reg}"
    grid = xr.load_dataarray(
        fname, engine="gmt", raster_kind=dataset.kind, region=region
    )

leads to error when attempting at downloading gebco data with 03s and 01s resolution.

Minimal Complete Verifiable Example

import pygmt
topography=pygmt.datasets.load_earth_relief(region=(20.2,20.9,38,38.54),resolution="03s",da\
ta_source="gebco")

Full error message

Traceback (most recent call last):
  File "<python-input-1>", line 1, in <module>
    topography=pygmt.datasets.load_earth_relief(region=(20.2,20.9,38,38.54),resolution="03s",data_source="gebco")
  File "/app/easyrisk/lib/python3.13/site-packages/pygmt/datasets/earth_relief.py", line 180, in load_earth_relief
    grid = _load_remote_dataset(
        name=name,
    ...<3 lines>...
        registration=registration,
    )
  File "/app/easyrisk/lib/python3.13/site-packages/pygmt/datasets/load_remote_dataset.py", line 582, in _load_remote_dataset
    grid = xr.load_dataarray(
        fname, engine="gmt", raster_kind=dataset.kind, region=region
    )
  File "/app/easyrisk/lib/python3.13/site-packages/xarray/backends/api.py", line 191, in load_dataarray
    with open_dataarray(filename_or_obj, **kwargs) as da:
         ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/app/easyrisk/lib/python3.13/site-packages/xarray/backends/api.py", line 813, in open_dataarray
    dataset = open_dataset(
        filename_or_obj,
    ...<16 lines>...
        **kwargs,
    )
  File "/app/easyrisk/lib/python3.13/site-packages/xarray/backends/api.py", line 606, in open_dataset
    backend_ds = backend.open_dataset(
        filename_or_obj,
    ...<2 lines>...
        **kwargs,
    )
  File "/app/easyrisk/lib/python3.13/site-packages/pygmt/helpers/decorators.py", line 742, in new_module
    return module_func(*bound.args, **bound.kwargs)
  File "/app/easyrisk/lib/python3.13/site-packages/pygmt/xarray/backend.py", line 149, in open_dataset
    source: str | list = which(fname=filename_or_obj, verbose="quiet")
                         ~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/app/easyrisk/lib/python3.13/site-packages/pygmt/helpers/decorators.py", line 576, in new_module
    return module_func(*args, **kwargs)
  File "/app/easyrisk/lib/python3.13/site-packages/pygmt/src/which.py", line 88, in which
    raise FileNotFoundError(msg)
FileNotFoundError: File(s) '@earth_gebco_03s_g' not found.

System information

PyGMT information:
  version: v0.17.0
System information:
  python: 3.13.9 (main, Oct 15 2025, 14:56:22) [GCC 15.2.0]
  executable: /app/easyrisk/bin/python
  machine: Linux-6.17.0-7-generic-x86_64-with-glibc2.41
Dependency information:
  numpy: 2.3.5
  pandas: 2.3.3
  xarray: 2025.11.0
  packaging: 25.0
  contextily: 1.7.0
  geopandas: 1.1.1
  IPython: 9.7.0
  pyarrow: 22.0.0
  rioxarray: 0.20.0
  gdal: 3.12.0
  ghostscript: None
GMT library information:
  version: 6.7.0
  padding: 2
  share dir: /usr/local/share
  plugin dir: /usr/local/lib/gmt/plugins
  library path: /usr/local/lib/libgmt.so
  cores: 16
  grid layout: rows
  image layout: 
  binary version: 6.7.0_d385d91_2025.11.18
WARNING:
  Ghostscript is not detected. Your installation may be broken.

[seisman]

Duplicate of issue #4177. See #4177 (comment) for explanations.