AgitatedDove14 , did you test it using a worker, or with local execution?
I just tested https://github.com/allegroai/clearml/blob/master/examples/frameworks/pytorch/pytorch_mnist.py with a (docker based) worker and it yields the same error
2022-07-17 07:59:40,330 - clearml.Task - INFO - Waiting to finish uploads 2022-07-17 07:59:40,330 - clearml.storage - INFO - Starting upload: /tmp/.clearml.upload_model_0_4d_ikk.tmp => tapsff.local:9000/clearml/examples/PyTorch MNIST train.02ed1df11bf546d8bb1938610b352803/models/mnist_cnn.pt 2022-07-17 07:59:40,339 - clearml.storage - ERROR - Failed uploading: Parameter validation failed: Invalid type for parameter ContentType, value: None, type: <class 'NoneType'>, valid types: <class 'str'> 2022-07-17 07:59:40,339 - clearml.storage - ERROR - Exception encountered while uploading Upload failed 2022-07-17 07:59:40,339 - clearml.Task - INFO - Failed model upload 2022-07-17 10:59:52 2022-07-17 07:59:49,651 - clearml.Task - INFO - Finished uploading