I encountered error subcode [...] while attempting to send an image via the API endpoint https://graph.facebook.com/v19.0/me/messages?access_token={token}. Specifically, this issue arises when the image URL contains Thai characters, such as https://{url}/เทส.png. Interestingly, when I send the same image with an English-only filename like https://{url}/test.png, it works perfectly. I've attempted encoding the URL, but the problem persists. Could you provide insights into why this might be happening?