The same problem has also occurred with me.
The problem occurs in the file ‘./wp-content/plugins/ninja-forms/ninja-forms.php’ in line 354:
require_once Ninja_Forms()::$dir . 'blocks/ninja-forms-blocks.php';
has to be:
require_once Ninja_Forms::$dir . 'blocks/ninja-forms-blocks.php';
I had to roll back to 3.4.27.1 and mine came back online.
dj
@uroboro_comunicazione @dljordaneku @mrmartinimo @dinosupafly
Can you make sure that you are updated to the latest version of Ninja Forms, 3.4.30 and see if you are still having the same issue?
If you are still having issues, the quickest way to get support is through our official Ninja Forms support form. http://ninjaforms.com/contact
@jmcelhaney
To be honest, it’s been over a month so I can’t remember which one of the nearly 30 sites I work with had the issue. If it is the one I am thinking of, it’s fine now but I am not sure.
Darrell