On the new search engine user interface, when the filter "added_by" is enabled, if you have some users who had added some photos, but the user was deleted afterwards, you get:

> Notice : Undefined offset: <user_id> in index.php on line 397
[search] undefined offset when missing added_by user
This is a GitHub Issue
repo:Piwigo
owner:Piwigo
Title : [search] undefined offset when missing added_by user
Issue date:

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On the new search engine user interface, when the filter "added_by" is enabled, if you have some users who had added some photos, but the user was deleted afterwards, you get:

> Notice : Undefined offset: <user_id> in index.php on line 397
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