- 🇹🇳Tunisia Riadh Rahmi
Also you can use this patch, I found this problem in version 8.x-2.0.
After creating a SignupForm blog, it does not show up on the block management page.
The following two log entries:
Notice: Undefined index: exists in Drupal\Core\Render\Element\MachineName::validateMachineName() ....
Warning: call_user_func() expects parameter 1 to be a valid callback, no array or string given in Drupal\Core\Render\Element\MachineName::validateMachineName() ...
Trying to build a page .... same issue
( Drupal 8.5.6 )
Closed: outdated
1.0
Code
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It's likely this issue predates Contrib.social: some issue and comment data are missing.
Also you can use this patch, I found this problem in version 8.x-2.0.