error message after update

Same for me. Notice shows up since update of Ninja Forms to version 2.9.29. It looks like somebody is already working on that https://github.com/wpninjas/ninja-forms/pull/957.

Alright,

thanks!

In the file: /wp-content/plugins/ninja-forms/classes/subs-cpt.php

Add the undefined variable $view_post_link_html to the global variable scope on line 638, so that it looks like this.

global $post, $post_ID, $view_post_link_html;

This is the fix, that variable outputs something like this

var_dump($view_post_link_html);

string(92) "
<a href="https://mydomain.com/?post_type=product&p=67">View post</a> "

Save the file and re-upload.

Thanks

Andi