claude response - hopefully it helps: here's a claude response regarding the issue, hopefully it helps:

Update — root cause is filename encoding, not missing files or AWS outage.

It's specific to PDFs, and it's not an AWS outage. The common factor is the filename. These scans were named on a Mac, so they contain a narrow no-break space (Unicode U+202F, shows as %E2%80%AF in the URLs) before "AM/PM," plus commas and spaces.

Case 2 (InvalidArgument) is the clearest evidence: S3 explicitly rejects the request because your app is putting U+202F into the response-content-disposition header, which must be ISO-8859-1. That file exists in the bucket — the download just can't complete because the header is malformed. That's an app-side bug in how the Content-Disposition filename is encoded (it needs RFC 5987 filename*=UTF-8'' encoding only, not the raw character in the plain filename= part).

I suspect Cases 1 (AccessDenied) and 3 (NoSuchKey) are the same underlying issue: the special characters in these Mac filenames were normalized inconsistently between upload and download, so the key being requested no longer matches the key actually stored.

update: i tried disabling block popus in chrome and tried different browsers firefox and edge to no avail - same exact result.. specific to pdfs, not all of them but today it was a decent amount.. it doesn't just happen when batch download, its also single downloads of pdfs..

CASE name: linda clausen

file pdf name: 4is7bdaEGF-Scanned Jun 24, 2026 at 3_01_29 PM

request ID: QAPJAKVQYD7GE3P8

URL: https://s3.us-east-2.amazonaws.com/assets.us-east-greatlab.com/bytescale_files/Company-08de7870-cd40-475f-8724-05146c4dfb75/Location-08de7871-12ed-4446-8392-914ed98ba76a/Practice-08de8f5b-e779-42cb-8959-184426d5567f/Order-08ded23b-dac1-4752-8b8a-e6610c4c63da/4is7bdaEGF-Scanned%20Jun%2024%2C%202026%20at%203_01_29%E2%80%AFPM.pdf

ERROR MESSAGE:

This XML file does not appear to have any style information associated with it. The document tree is shown below.

<Error>

<Code>AccessDenied</Code>

<Message>Access Denied</Message>

<RequestId>QAPJAKVQYD7GE3P8</RequestId>

<HostId>6GsUeJPJN9zmnJfVFtBGmNgN/R2nAgpWlSgVOrrmhMcpuipLyeOMKaPCXzYKKMgEDaZF4WlYVc1tQJ6m8CId05euXL4wx4Qd</HostId>

</Error>

case2:

CASE name: Quinley Fischbein

file pdf name: 4irzHvyZGe-Scanned Jun 25, 2026 at 1_51_33 PM

request ID: VWJFTYXFNCR5FQ4M

ERROR MESSAGE:

<Error>

<Code>InvalidArgument</Code>

<Message>Header value cannot be represented using ISO-8859-1.</Message>

<ArgumentName>response-content-disposition</ArgumentName>

<ArgumentValue>attachment; filename="4irzHvyZGe-Scanned_Jun_25_2026_at_1_51_33 PM.pdf"; filename*=UTF-8''4irzHvyZGe-Scanned_Jun_25_2026_at_1_51_33%E2%80%AFPM.pdf</ArgumentValue>

<RequestId>VWJFTYXFNCR5FQ4M</RequestId>

<HostId>m6Od2g9zBPbD6tH3PaG+KoMiFbbYXkGA0NEeGAI9+FXhre8rnd2daEyjnjxk/kjN7Qp8C1hu3x6xFSa8dz+4gwVJtZVDkJ2K</HostId>

</Error>

case3:

CASE name: Sullivan Fischbein

file pdf name: 4irzNgX3Kh-Sullivan Fischbein

request ID: 0TQNWTS55XDRHKTF

ERROR MESSAGE:

<Error>

<Code>NoSuchKey</Code>

<Message>The specified key does not exist.</Message>

<Key>bytescale_files/Company-08de7870-cd40-475f-8724-05146c4dfb75/Location-08de7871-12ed-4446-8392-914ed98ba76a/Practice-08de8f5b-e779-42cb-8959-184426d5567f/Order-08ded2f9-60c6-41d5-87b6-4a2cdf99bbf6/4irzNgX3Kh-Sullivan Fischbein.pdf</Key>

<RequestId>0TQNWTS55XDRHKTF</RequestId>

<HostId>N+JS4U0rx99B48tE2ZCzapylBDkEr+TwqJRurVsJTtqKnMthz7Sz1fwsoLP0n31j/E0ENY5S7HHZpvo4CSly0EVSERxCYLu8</HostId>

</Error>

i just talked with front desk. shes going to start converting what she can to jpg since pdf is having an issue, but it time consuming.. its a big deal since i cant see what the doctor wants for the design that im trying to start.

tried downloading the next case: This XML file does not appear to have any style information associated with it. The document tree is shown below.

<Error>

<Code>NoSuchKey</Code>

<Message>The specified key does not exist.</Message>

<Key>bytescale_files/Company-08de7870-cd40-475f-8724-05146c4dfb75/Location-08de7871-12ed-4446-8392-914ed98ba76a/Practice-08de8f5b-e779-42cb-8959-184426d5567f/Order-08ded2f9-60c6-41d5-87b6-4a2cdf99bbf6/4irzNgX3Kh-Sullivan Fischbein.pdf</Key>

<RequestId>NBW8WHVAXKG9ZKWR</RequestId>

<HostId>EyvNaJ2xkJNVZ9XiF3XPzMtvjwuO+n0Pg5gaAUwe6AWsaAWAWUH2aGVG4ldpX6Wjq0KHDcfKceG0LfQoaE4mImXC25y8JsRL</HostId>

</Error>