Hi RoughTiger69 ! Can you try adding the files using a python script such that we could get an exception traceback, something like this:
` from clearml import Dataset

or just use the ID of the dataset you previously created instead of creating a new one

parent_dataset = Dataset.create(dataset_name="xxxx", dataset_project="yyyyy", output_uri=" ")
parent_dataset.add_files("folder1")
parent_dataset.upload()
parent_dataset.finalize()

child_dataset = Dataset.create(dataset_name="xxxx", dataset_project="yyyyy", output_uri=" ", parent_datasets=[parent_dataset.id]) # or just use the ID of the dataset you previously created
child_dataset.add_files("folder2")
child_dataset.upload()
child_dataset.finalize() `Also, how many files are in the parent dataset?
Thanks