Copy REST API returns 504 for pages with many attachments

Issue Summary

Wrong API response for /copy REST API.

Steps to Reproduce

1. create a page with 1000 attachments.

1. call below REST API

https://YOUR_SITE.atlassian.net/wiki/rest/api/content/PAGE_ID_WITH_1000_ATTACHEMNTS/copy
body:
{
  "copyAttachments": true,
	"destination": {
    "type": "parent_page",
    "value": "PAGE_ID_WITH_1000_ATTACHEMNTS"
  },
  "pageTitle": "copy_test"
}
 

Expected Results

Page copied and API should return 200.
 

Actual Results

Page copied and API returns 504.

Workaround

Use /pagehierarchy/copy instead of /copy