Markdown s3 upload not working (404 error on /nova-api/campaigns/field-attachment/copy)

[HeadStudios]

• Laravel Version: 9
• Nova Version: 4
• PHP Version: 8.2
• Database Driver & Version: MySQL
• Operating System and Version: MacOS Big Sur
• Browser type and version: Version 113.0.5672.126 (Official Build) (arm64)
• Reproduction Repository: https://github.com/HeadStudios/novaissue-5456-nonova

Description:

I am unable to upload files through s3 to Markdown field (withFiles('s3') option) - getting 404 error even though the URL itself exists:
https://share.getcloudapp.com/o0uJN7O9

https://share.getcloudapp.com/2NupJPo5

Video for context: https://p147.p4.n0.cdn.getcloudapp.com/items/rRuzwWg9/9fdd6dd8-1261-454c-8c90-66a1b5099633.mp4?v=a2afebc8135a83b8c7c3bd48a97b05d6

Detailed steps to reproduce the issue on a fresh Nova installation:

Setup Campaign.php model as so: https://github.com/HeadStudios/novaissue-5456-nonova/blob/main/app/Models/Campaign.php

[crynobone]

404 here can be a result where Nova is unable to identify that copy field attribute exists on the Resource. This could happen when 3rd party package doesn't compile fields inside the custom panel correctly.

[crynobone]

https://github.com/Formfeed-UK/nova-dependable-panel/blob/main/src/DependablePanel.php

DependablePanel extends Field and not Panel. As a result, Laravel Nova can't verify that the field exists via attribute name. This mean Nova doesn't know the correct Markdown field to be referred to and returns 404. You can resolve this using a normal Panel or find a way around it.

[HeadStudios]

Thank you! This has fixed my issue.