FileNotFoundError: [Errno 2] No such file or directory:

## While Trying to upload file to s3 or Azure I getting this FileNotFoundError,

We have functionality like continuously uploading files to the cloud, For the 1st iteration for some files I am getting this issue, while in the second or 3rd iteration those files are able to upload, (tried absolute file path also )

`[E 2023-01-12 10:19:58.949+00:00 mbl:405] U: Error when uploading /workspace/cam_vids/to_upload/Camera_1__2023-01-12__10-19-09__+0000.mp4:
Traceback (most recent call last):
File "/workspace/mbl.py", line 390, in __upload_to_cloud
self.libcloud_driver[str(cam_idx)].upload_object(
File "/usr/local/lib/python3.8/dist-packages/libcloud/storage/drivers/azure_blobs.py", line 1025, in upload_object
blob_size = os.stat(file_path).st_size
FileNotFoundError: [Errno 2] No such file or directory: '/workspace/cam_vids/to_upload/Camera_1__2023-01-12__10-19-09__+0000.mp4'
[D 2023-01-12 10:20:00.069+00:00 mbl:400] U: Uploaded /workspace/cam_vids/to_upload/Camera_1__2023-01-12__10-19-27__+0000.jpg to azurebucket/Camera_1__2023-01-12__10-19-27__+0000.jpg`

Reproduce the continuous upload flow described in the issue, starting at __upload_to_cloud in mbl.py and the upload_object implementation in azure_blobs.py. Compare the first failed iteration with later successful uploads and determine the relevant file-lifecycle behavior. Done means the reported first-iteration FileNotFoundError is understood and the upload flow handles the affected files consistently.

Written by the indexing model from the issue text.