The following error is shown for each post, when viewing posts within a single forum:

“Warning: Missing argument 3 for sp_redirect_forumview_first_post() in /var/www/opc/wp-content/sp-resources/forum-plugins/topic-redirect/sp-redirect-plugin.php on line 148”

Steps:

1. Activate the Redirect plugin
2. Go to a forum page and create a new page with redirect:
   1. specify a page name
   2. specify the redirect URL in the main body
   3. specify an optional text
3. Save and close the form.

Now, go to any forum and all of the posts show the above error.

How do I fix this? Thank you.