Title: Error blocking use, Latest version
Last modified: October 10, 2020

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# Error blocking use, Latest version

 *  Resolved [openedge1](https://wordpress.org/support/users/openedge1/)
 * (@openedge1)
 * [5 years, 8 months ago](https://wordpress.org/support/topic/error-blocking-use-latest-version/)
 * Received this error from our WordPress install…
 * `An error of type E_ERROR was caused in line 324 of the file /home/nantahalahiking2/
   public_html/wp-content/plugins/ninja-forms/deprecated/classes/notifications.php.
   Error message: Uncaught Error: Call to a member function save_admin() on null
   in /home/nantahalahiking2/public_html/wp-content/plugins/ninja-forms/deprecated/
   classes/notifications.php:324`
 * The form is working, but when going to edit the form, I get the ‘Critical Error’
   page, and then the above is sent to me via email.
 * Why is it saying deprecated when I have the latest version?
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Ferror-blocking-use-latest-version%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

Viewing 2 replies - 1 through 2 (of 2 total)

 *  [Ramzii](https://wordpress.org/support/users/ramzii/)
 * (@ramzii)
 * [5 years, 8 months ago](https://wordpress.org/support/topic/error-blocking-use-latest-version/#post-13532378)
 * Same issue here. Please fix this asap.
 *  Plugin Contributor [Justin McElhaney](https://wordpress.org/support/users/jmcelhaney/)
 * (@jmcelhaney)
 * [5 years, 7 months ago](https://wordpress.org/support/topic/error-blocking-use-latest-version/#post-13649154)
 * [@ramzii](https://wordpress.org/support/users/ramzii/) [@openedge1](https://wordpress.org/support/users/openedge1/)
   
   It appears that you are still using the deprecated, 2.9.x codebase. You can upgrade
   to the 3 codebase by following this documentation. [https://ninjaforms.com/docs/conversion/](https://ninjaforms.com/docs/conversion/)

Viewing 2 replies - 1 through 2 (of 2 total)

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## Tags

 * [deprecated](https://wordpress.org/support/topic-tag/deprecated/)

 * 2 replies
 * 3 participants
 * Last reply from: [Justin McElhaney](https://wordpress.org/support/users/jmcelhaney/)
 * Last activity: [5 years, 7 months ago](https://wordpress.org/support/topic/error-blocking-use-latest-version/#post-13649154)
 * Status: resolved