[4.x & 5.x]: Error when using Live Preview after uploading an asset

[tommysvr]

What happened?

Description

Getting an Uncaught (in promise) DOMException: Failed to set the 'value' property on 'HTMLInputElement': This input element accepts a filename, which may only be programmatically set to the empty string error when uploading an asset and then trying to preview an entry.

Steps to reproduce

1. Click 'Upload Files' on an assets field
2. Upload an image
3. Click 'Preview'

Tested on a local filesystem, asset field settings are all set to the default. Dragging an image onto the field works without error.

Tested in Chrome, Safari and Firefox - the error differs slightly in each.

screenshot_2024_04_19._14.58-converted.2.mp4

Expected behavior

Live Preview loads correctly

Actual behavior

Live Preview window doesn't show, and this error is shown in the browser console:

jquery.js?v=1707205984:2 Uncaught (in promise) DOMException: Failed to set the 'value' property on 'HTMLInputElement': This input element accepts a filename, which may only be programmatically set to the empty string.
    at HTMLInputElement.<anonymous> (https://craft5.ddev.site/cpresources/624f2193/jquery.js?v=1707205984:2:67445)
    at Function.each (https://craft5.ddev.site/cpresources/624f2193/jquery.js?v=1707205984:2:3091)
    at T.fn.init.each (https://craft5.ddev.site/cpresources/624f2193/jquery.js?v=1707205984:2:1571)
    at T.fn.init.val (https://craft5.ddev.site/cpresources/624f2193/jquery.js?v=1707205984:2:67137)
    at Object.copyInputValues (https://craft5.ddev.site/cpresources/1ab53bc8/garnish.js?v=1711503619:2:112805)
    at s.constructor._getClone (https://craft5.ddev.site/cpresources/ef40e11e/cp.js?v=1713140127:2:632336)
    at s.constructor.open (https://craft5.ddev.site/cpresources/ef40e11e/cp.js?v=1713140127:2:622757)
    at s.constructor.<anonymous> (https://craft5.ddev.site/cpresources/ef40e11e/cp.js?v=1713140127:2:451105)
    at f (https://craft5.ddev.site/cpresources/ef40e11e/cp.js?v=1713140127:2:425357)
    at Generator.<anonymous> (https://craft5.ddev.site/cpresources/ef40e11e/cp.js?v=1713140127:2:426703)

Craft CMS version

Tested on 4.8.9 & 5.0.4

PHP version

8.2

Operating system and version

No response

Database type and version

MySQL 8.0

Image driver and version

No response

Installed plugins and versions

[brandonkelly]

Thanks for reporting that Tommy! Fixed for the next release.

[brandonkelly]

Craft 4.8.10 and 5.0.5 are out with that fix.