Hi there.
On Drupal 9.4.5 and PHP 8.0.21 we are not able to add a signup form.
Under /admin/config/system/sendinblue/sendinblue_signup_form/add we get
TypeError: call_user_func(): Argument #1 ($callback) must be a valid callback, no array or string given in call_user_func() (Zeile 275 in /var/www/html/core/lib/Drupal/Core/Render/Element/MachineName.php)
Any ideas about that?
Thanks
Needs review
2.0
Code
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It's likely this issue predates Contrib.social: some issue and comment data are missing.
Same error using Drupal 9.5.3, PHP 8.1.6
The error is caused by the inexistence of the '#machine_name' => ['exists' => 'EntityClass::method'] array key, which should point to the class method that can be used to ensure that the machine name isn't duplicated.
Attached a patch that fixes the issue.