cloud storage 404 error while uploading files

I am doing an upload of files for further processing to a bucket on GCP. Most of the files uploaded fine. However for some 62 left of a total of several thousand i am getting a 404 message.

Something in this form

Resuming upload for wave/continuous/2016/LO/…
Resuming upload for wave/continuous/2016/LO/…

ERROR: gs://ospl.. not found: 404.
ERROR: gs://ospl… not found: 404.

All commands like

gcloud storage ls gs://ospl…

Work just fine, so I don’t understand why I would be getting this url not found error.

Thanks for any help.

I think we are likely going to have to see the complete error messages returned. It would also help to paint a picture of what commands you are running. Where are the source files located? I also notice the phrase “Resuming upload …” … could the upload have been interrupted and restarted but the original source files changed/deleted between the original request and now?