I have created two datasets via REST API calls, one with a dropboxlink to the .zip file and one from the .zip file on my local drive. Both datasets are available and the statusMsg is SUCCEEDED.

When I try to train the datasets, for both I get the error message: "Failed to get dataset download url"

1 Answer 1


The problem was in my dataset.zip. I changed the following things, without trying out what the significant change was:

  • changed labels (foldernames) from numbers to letters, starting with a capital letter
  • removed "_" from the image filename
  • smaller dataset

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