SourcingKit not importing images

For Workes & Pages, what is the name of the domain?

n/a

What is the error number?

importErrorRetryExhaustion

What is the error message?

: file failed to import despite retries; last error is: "f1513685d37a49cfb353874dc7a471d1.jpg"\n : could not store original image; on migration

What is the issue or error you’re encountering

SourcingKit finds S3 objects, but fails to import them

What steps have you taken to resolve the issue?

Retried multiple times
Created new IAM user with permissions stated in docs

What are the steps to reproduce the issue?

Enter bucket details, click import, wait forever for the job to run. Observe no images imported, but job status is done.

Screenshot of the error