DeterminedOwl36 perhaps this is a side-effect of the running environment? What are you using to run the experiment? Is this clearml-agent running the experiments remotely?

SuccessfulKoala55 I don't think so cuz the files are just small dataframes and the thing is I tried saving those output files on my local machine then created a new task, uploaded them with a new code on .ipynb, and it took less than a minute and everything works fine. (the frozen script is .py)

Most likely the files is large and it's just uploading it?

It printed "ClearML couldn't detect iterations..." something like this, but the process never ends, just freezes here. I mean I can't run any further commands with this terminal cuz it's running this task, except ctrl+c.

but it seemed like even after .upload_artifact() has done its job, the task's terminal didn't terminate.

DeterminedOwl36 I'm not sure I understand this statement - do you mean the console print outs did not day "task completed"?