Issue Summary

Certain attachments fail to be added to Trello cards via the API, despite identical API calls for each attachment.

Steps to Reproduce

1. Use an automation rule to create a Trello card and attempt to add multiple attachments to the card using the Trello API.

1. Execute a POST request to the URL:

   https://api.trello.com/1/cards/\{TrelloCardId}/attachmentswith appropriate API keys, tokens, filenames, and URLs in the parameters.

Expected Results

All attachments should be successfully added to the Trello card without errors.

Actual Results

Some attachments fail to be added, while others succeed, even though the API requests are identical.

Workaround

Currently, there is no known workaround for this behaviour. A workaround will be added here when available.