Widgets.php returning 500 when using php 8.0.3

[Dan14]

I am not a developer. I switched from php 7.4 to php 8.0.3. The widgets do load at the front end but I cannot make any edits in appearance - widgets. /widgets.php is returning 500 error when using php 8.0.3. I reverted back to php 7.4 for testing and widgets.php functioned as normal.

I hope I contributed something.

[mmuyskens]

Tested this on PHP Version 8.0.3 and not able to replicate from my side.

What does your error log show? This sounds more like a missing PHP module vs an actual issue with PHP 8 itself.

[SergeyBiryukov]

Hi there, welcome to WordPress Trac! Thanks for the report.

Just noting that this might be related to #53278.

Does the issue still happen with all plugins disabled and a default theme (Twenty Twenty) activated?

[justinahinon]

I can not reproduce the issue also.

Test setup
WordPress 5.7.2 with Twenty Twenty One and no plugin activated.

[karmatosed]

Thank you everyone for your collaboration on this. Based on the feedback and lack of being able to replicate this I am going for now close this. However, we can always reopen should further information come up.