Hello,I have following error.

Warning: strlen() expects parameter 1 to be string, array given in /var/www/html/drupal8/core/lib/Drupal/Component/Utility/Unicode.php on line 691

Notice: Array to string conversion in /var/www/html/drupal8/core/lib/Drupal/Component/Render/MarkupTrait.php on line 43
ArrayTitle

CommentFileSizeAuthor
Screenshot from 2015-11-18 18:40:04.png121.83 KBNuWans
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NuWans created an issue. See original summary.

nils.destoop’s picture

Status: Active » Closed (duplicate)

This is a known issue in core, a patch is available. Closing this one for this field_group issue #2611888: Tree get lost after saving forms display (elements prefixed with Array)

NuWans’s picture

Thankyou
++

turion’s picture