Bug: base url with s3 failed in check_write_permissions

I have error in check_write_permissions when set 3S target as default_output_uri after this commit https://github.com/allegroai/clearml/commit/21712a709d052a2bd62f1324b7c1fa928dbd6ece#diff-bc25f5894da3c404d2b542d9da72ed37c7a42522b4032f2530beaf560210b653

Traceback (most recent call last):
  File "/home/shm/Documents/project/CMLP/examples/./clearml_test_local.py", line 9, in <module>
    task = Task.init(project_name="great project", task_name="best experiment")
  File "/home/shm/Documents/project/CMLP/examples/venv/lib/python3.9/site-packages/clearml/task.py", line 602, in init
    task.output_uri = cls.__default_output_uri
  File "/home/shm/Documents/project/CMLP/examples/venv/lib/python3.9/site-packages/clearml/task.py", line 1084, in output_uri
    helper.check_write_permissions(value)
  File "/home/shm/Documents/project/CMLP/examples/venv/lib/python3.9/site-packages/clearml/storage/helper.py", line 851, in check_write_permissions
    err_msg = 'Insufficient permissions ({} failed) for ' + base_url
  File "/home/shm/Documents/project/CMLP/examples/venv/lib/python3.9/site-packages/clearml/utilities/proxy_object.py", line 286, in method
    mtd = getattr(obj, name)
AttributeError: 'str' object has no attribute '__radd__'

It fixes with

err_msg = 'Insufficient permissions ({} failed) for ' + str(base_url)

in 847 line clearml/storage/helper.py

[jkhenning]

@Shm013 v1.6.2 is out 🙂

[jkhenning]

Hi @Shm013,

I’ll be releasing the formal version today and updating the code, it was basically solved by changing the format string construction to using a safer conversion (as the + operator caused issues with the URL value that might be lazily loaded)