Error adding comment to card

[Greg Wunder]

We have been using Trello for years with no issues.

Today one user is erroring when trying to add a text comment to a card. It is only happening for one user/member.

Error is as below ;

Error details:

Error: Loading chunk 28973 failed.
(error: https://trello.com/assets/atlaskit-editor-toolbar-button.d0181c3ddd717ea44979.js).
Error info: 
    at r (https://trello.com/assets/atlaskit-editor-core.3a0a43c0f439243ae46c.js:2:688409)
    at Ll (https://trello.com/assets/atlaskit-editor-core.3a0a43c0f439243ae46c.js:2:691442)
    at https://trello.com/assets/atlaskit-editor-core.3a0a43c0f439243ae46c.js:2:736440
    at $d (https://trello.com/assets/atlaskit-editor-core.3a0a43c0f439243ae46c.js:2:755393)
    at n (https://trello.com/assets/notifications-menu-button.a4a88a27ed3b8f9f8a02.js:1:31671)
    at p
    at t (https://trello.com/assets/notifications-menu-button.a4a88a27ed3b8f9f8a02.js:1:29030)
    at Jd (https://trello.com/assets/atlaskit-editor-core.3a0a43c0f439243ae46c.js:2:758861)
    at jhe (https://trello.com/assets/atlaskit-editor-core.3a0a43c0f439243ae46c.js:2:2372699)
    at n (https://trello.com/assets/atlaskit-editor-core.3a0a43c0f439243ae46c.js:2:2372832)
    at div
    at Pn (https://trello.com/assets/trello-editor.b2fbdad136d26cb42b85.js:2:312147)
    at n (https://trello.com/assets/atlaskit-editor-core.3a0a43c0f439243ae46c.js:2:662038)
    at div
    at R (https://trello.com/assets/notifications-menu-button.a4a88a27ed3b8f9f8a02.js:1:63666)
    at p (https://trello.com/assets/notifications-menu-button.a4a88a27ed3b8f9f8a02.js:1:174027)
    at ue (https://trello.com/assets/atlaskit-editor-core.3a0a43c0f439243ae46c.js:2:522803)
    at n (https://trello.com/assets/atlaskit-editor-core.3a0a43c0f439243ae46c.js:2:523568)
    at n (https://trello.com/assets/notifications-menu-button.a4a88a27ed3b8f9f8a02.js:1:35228)
    at A
    at n (https://trello.com/assets/notifications-menu-button.a4a88a27ed3b8f9f8a02.js:1:6155)
    at n (https://trello.com/assets/notifications-menu-button.a4a88a27ed3b8f9f8a02.js:1:35228)
    at A
    at n (https://trello.com/assets/notifications-menu-button.a4a88a27ed3b8f9f8a02.js:1:3236)
    at n (https://trello.com/assets/notifications-menu-button.a4a88a27ed3b8f9f8a02.js:1:35228)
    at A
    at n (https://trello.com/assets/notifications-menu-button.a4a88a27ed3b8f9f8a02.js:1:9236)
    at n (https://trello.com/assets/notifications-menu-button.a4a88a27ed3b8f9f8a02.js:1:35228)
    at A
    at n (https://trello.com/assets/notifications-menu-button.a4a88a27ed3b8f9f8a02.js:1:9236)
    at n (https://trello.com/assets/notifications-menu-button.a4a88a27ed3b8f9f8a02.js:1:35228)
    at A
    at n (https://trello.com/assets/notifications-menu-button.a4a88a27ed3b8f9f8a02.js:1:9236)
    at n (https://trello.com/assets/notifications-menu-button.a4a88a27ed3b8f9f8a02.js:1:35228)
    at A
    at n (https://trello.com/assets/notifications-menu-button.a4a88a27ed3b8f9f8a02.js:1:9236)
    at n (https://trello.com/assets/notifications-menu-button.a4a88a27ed3b8f9f8a02.js:1:35228)
    at A
    at n (https://trello.com/assets/notifications-menu-button.a4a88a27ed3b8f9f8a02.js:1:9236)
    at n (https://trello.com/assets/notifications-menu-button.a4a88a27ed3b8f9f8a02.js:1:35228)
    at A
    at n (https://trello.com/assets/notifications-menu-button.a4a88a27ed3b8f9f8a02.js:1:9236)
    at n (https://trello.com/assets/notifications-menu-button.a4a88a27ed3b8f9f8a02.js:1:35228)
    at A
    at n (https://trello.com/assets/notifications-menu-button.a4a88a27ed3b8f9f8a02.js:1:9236)
    at n (https://trello.com/assets/notifications-menu-button.a4a88a27ed3b8f9f8a02.js:1:27930)
    at t (https://trello.com/assets/notifications-menu-button.a4a88a27ed3b8f9f8a02.js:1:222615)
    at Dt (https://trello.com/assets/trello-editor.b2fbdad136d26cb42b85.js:2:258408)
    at https://trello.com/assets/trello-editor.b2fbdad136d26cb42b85.js:2:259367
    at U (https://trello.com/assets/app.790bd85cdd20b834718f.js:1:703288)
    at Suspense
    at ro (https://trello.com/assets/trello-editor.b2fbdad136d26cb42b85.js:2:317895)
    at Suspense
    at c (https://trello.com/assets/board-sidebar.cb52bb9b59f57c92c302.js:1:1232011)
    at div
    at f (https://trello.com/assets/new-comment.40cab2882d91b85d7c56.js:1:1971)
    at ve (https://trello.com/assets/new-comment.40cab2882d91b85d7c56.js:1:16500)
    at m (https://trello.com/assets/app.790bd85cdd20b834718f.js:1:699027)
    at Suspense
    at U (https://trello.com/assets/app.790bd85cdd20b834718f.js:1:703288)
    at c (https://trello.com/assets/board-sidebar.cb52bb9b59f57c92c302.js:1:1089933)
    at a (https://trello.com/assets/ltp.ee2136a5a23dc4a9bf7b.js:2:1239006)
    at bt (https://trello.com/assets/app.790bd85cdd20b834718f.js:28:3202)
    at l (https://trello.com/assets/app.790bd85cdd20b834718f.js:148:279590)
    at div
    at d (https://trello.com/assets/app.790bd85cdd20b834718f.js:1:646254).

[Mutya A · Accepted solution]

Hi Greg, thanks for using Trello all these years! 

Could you please let me know what actions they're taking before seeing that error message? For performance reasons, Trello loads resources from its content delivery network (CDN), which is located at a.trellocdn.com. To use Trello, they will need to make sure that they can access this domain and that it is not blocked by any proxies or firewalls.

The best way to confirm that you can access the Trello CDN is to open our test page, hosted on the CDN:

http://a.trellocdn.com/test.html

If they don't load, this could be due to some common causes, such as DNS cache issues or a firewall that is blocking access. For more information on how to resolve these issues, see: http://help.trello.com/customer/portal/articles/1339289-loading-resources-from-trello-s-cdn

I hope this helps, but let us know if you have any questions!
----------------
If this post helps with your query, then please consider the Accept answer or Like button to help the other users find it more quickly.

[Greg Wunder]

Many thanks,

Clearing cache has solved this issue.