#PHP 8.1

Came up again while testing 📌 Rewrite facets exposed filters to be native views filters. Active

Updating NULL values to either 'a:0:{}' (map field) or 'N;' (almost any other) on problematic column(s) once also resolves problem.
No patch needed. You can create update hook for this.

This works because problem is appearing only when you are adding field to entities with existing entries.

#9 and #12 didn't fix the issue for me.
The merge request/patch #5 works, but it's described as "a workaround." Is there a better solution?

I tried MR !5005 and it did not work. I was able to use #21 successfully.

I am on 10.2.6 using php 8.2.18

Thanks

Good to see progress here! FWIW I just deployed the patch in #48 to a production site and it resolved the deprecation warnings described in https://www.drupal.org/project/profile/issues/3324465 📌 [PHP 8.1] Deprecated function: unserialize(): Passing null to parameter #1 ($data) of type string is deprecated in Drupal\Core\Entity\Sql\SqlContentEntityStorage->mapFromStorageRecords() Closed: duplicate . I was a little surprised at the substantial CPU performance improvement for the site, presumably because these were invalidating the varnish cache.

This was already fixed.

#2 works with `10.2.6`

Started new merge request targeting 11.x with:

1. patch from #48
2. suggestion from #54
3. and links to #2883851: Add initial values support for configurable and multi-valued fields → from #36