tf_2dunet Exception

[omnia487]

trying to initialize the tf_2dunet plan but I cant
Exception : need at least one array to concatenate

[itrushkin]

Hey @omnia487. Thank you for your interest in OpenFL!

Your question looks like a duplicate of #366.

Because of legal restriction of BraTS dataset, tf_2dunet workspace requires data to be already on the device. If you have the data locally, could you provide directory tree of the dataset?
You can do it via executing:

sudo apt-get install tree
tree -L 2 path/to/data/MICCAI_BraTS_2019_Data_Training/HGG # replace with your location

[omnyaatef22]

[theakshaypant]

The example was updated recently and can be run using the steps mentioned in #1126 (comment) after changes introduced in #1178.

Could you check if the error can be reproduced or can this issue be closed.

[teoparvanov]

PS: this workspace is being fundamentally reworked and migrated to the Keras 3 API as part of this PR, where it has been renamed to keras_2dunet. Please retest, and let us know if you still encounter any issues.