Taks failed to merge DTM tiles

1 replies in Support

Forum/General/Support/Taks failed to merge DTM tiles
Updated Jul 20, 2026, 8:38 AM

Topic starter · Jul 19, 2026, 10:07 AM

I get this task failed message every time i try to download DTM data from the swedish DTM provider, all login credentials are valid.

[task 8943][python:stderr] [pydtmdl][INFO] Starting DTM asset extraction provider=sweden fallback=none center=(57.619504756149034, 15.000275373458862) size=6144x6144 rotation=0.0 cache_dir=/data/task-cache/dtm settings=['password', 'username']
[task 8943][python:stderr] [pydtmdl][DEBUG] File downloaded successfully: /data/task-cache/dtm/sweden/_tiles/shared/63875_4975_25.tif
[task 8943][python:stderr] [pydtmdl][DEBUG] File downloaded successfully: /data/task-cache/dtm/sweden/_tiles/shared/63875_4950_25.tif
[task 8943][python:stderr] [pydtmdl][DEBUG] File downloaded successfully: /data/task-cache/dtm/sweden/_tiles/shared/63850_4975_25.tif
[task 8943][python:stderr] [pydtmdl][DEBUG] Fi
... [truncated] ...
sk-cache/dtm/sweden/_tiles/shared/63875_4975_25.tif', '/data/task-cache/dtm/sweden/_tiles/shared/63875_4950_25.tif', '/data/task-cache/dtm/sweden/_tiles/shared/63850_4975_25.tif', '/data/task-cache/dtm/sweden/_tiles/shared/63850_4950_25.tif', '/data/task-cache/dtm/sweden/_tiles/shared/63825_4975_25.tif', '/data/task-cache/dtm/sweden/_tiles/shared/63825_4950_25.tif', '/data/task-cache/dtm/sweden/_tiles/shared/m22c001-638_49.copc.laz', '/data/task-cache/dtm/sweden/_tiles/shared/63875_5025_25.tif', '/data/task-cache/dtm/sweden/_tiles/shared/63875_5000_25.tif', '/data/task-cache/dtm/sweden/_tiles/shared/63850_5025_25.tif', '/data/task-cache/dtm/sweden/_tiles/shared/63850_5000_25.tif', '/data/task-cache/dtm/sweden/_tiles/shared/63825_5025_25.tif', '/data/task-cache/dtm/sweden/_tiles/shared/63825_5000_25.tif', '/data/task-cache/dtm/sweden/_tiles/shared/m638_50.tif', '/data/task-cache/dtm/sweden/_tiles/shared/m638_49.tif', '/data/task-cache/dtm/sweden/_tiles/shared/m22c002-638_50.copc.laz']
[task 8943][python:stderr] [pydtmdl][DEBUG] Multiple tiles downloaded. Merging tiles
[task 8943][python:stderr] [pydtmdl][DEBUG] Merging tiff files...
[task 8943][worker] CropExtractionError: Failed to merge the downloaded tiles.
CropExtractionError: Failed to merge the downloaded tiles.
Level
5
Posts
26

Reply · Jul 20, 2026, 8:38 AM

@jonathan.claesson, that means that there are not enough tiles to merge them; probably some are missing or have incorrect data.
You can choose a different DTM provider. The providers are 3rd party services not managed by MapToPlay, so I don't have any control over it.

Regards
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