The request signature we calculated does not match the signature you provided

I suddenly started getting this error on something that has been working before now. I have not made any config changes either locally or on s3. I get this error when I try to upload to S3, or when I get a presign URL and navigate to it on the browser. "An error occurred while processing the media: java.lang.Exception: com.amazonaws.services.s3.model.AmazonS3Exception: The request signature we calculated does not match the signature you provided. Check your key and signing method. (Service: Amazon S3; Status Code: 403; Error Code: SignatureDoesNotMatch; Request ID"