Full error message when posting to other communities on other (Lemmy?) servers.
Your post was not accepted because Failed to upload app/static/tmp/UQly43VHWIsuAB6.webp to piefedworld/posts/UQ/ly/UQly43VHWIsuAB6.webp: An error occurred (SignatureDoesNotMatch) when calling the PutObject operation: The request signature we calculated does not match the signature you provided. Check your key and signing method.