Title: Fatal error – version 3.45.1
Last modified: February 12, 2020

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# Fatal error – version 3.45.1

 *  Resolved [sacfc](https://wordpress.org/support/users/sacfc/)
 * (@sacfc)
 * [6 years, 5 months ago](https://wordpress.org/support/topic/fatal-error-version-3-45-1/)
 * We recently upgraded to v3.45.1 of the plugin but have been experiencing the 
   following fatal error on specific pages (that relate to a popular sports club
   management plugin sportspress):
    [12-Feb-2020 05:17:56 UTC] PHP Fatal error: 
   Uncaught TypeError: Argument 1 passed to MailPoet\Form\DisplayFormInWPContent::
   display() must be of the type string, null given, called in /home/stalban7/public_html/
   wp-includes/class-wp-hook.php on line 288 and defined in /home/stalban7/public_html/
   wp-content/plugins/mailpoet/lib/Form/DisplayFormInWPContent.php:26 Stack trace:#
   0 /home/stalban7/public_html/wp-includes/class-wp-hook.php(288): MailPoet\Form\
   DisplayFormInWPContent->display(NULL) #1 /home/stalban7/public_html/wp-includes/
   plugin.php(206): WP_Hook->apply_filters(NULL, Array) #2 /home/stalban7/public_html/
   wp-includes/formatting.php(3802): apply_filters(‘the_content’, ”) #3 /home/stalban7/
   public_html/wp-includes/class-wp-hook.php(288): wp_trim_excerpt(”, Object(WP_Post))#
   4 /home/stalban7/public_html/wp-includes/plugin.php(206): WP_Hook->apply_filters(”,
   Array) #5 /home/stalban7/public_html/wp-includes/post-template.php(425): apply_filters(‘
   get_the_excerpt’, ”, Object(WP_Post)) #6 /home/stalban7/public_html/wp-content/
   plugins/wordpress-seo/front in /home/stalban7/public_html/wp-content/plugins/
   mailpoet/lib/Form/DisplayFormInWPContent.php on line 26
 * We’ve de-activated MailPoet plugin to allow the rest of the site to work correctly–
   but appreciate any feedback on how to address the issue

Viewing 4 replies - 1 through 4 (of 4 total)

 *  [Wysija](https://wordpress.org/support/users/wysija/)
 * (@wysija)
 * [6 years, 5 months ago](https://wordpress.org/support/topic/fatal-error-version-3-45-1/#post-12429401)
 * Hi [@sacfc](https://wordpress.org/support/users/sacfc/)
 * We are aware of this issue and we are going to fix it for the next version. Sorry
   for the inconvenience.
 *  [Wysija](https://wordpress.org/support/users/wysija/)
 * (@wysija)
 * [6 years, 5 months ago](https://wordpress.org/support/topic/fatal-error-version-3-45-1/#post-12429407)
 * Please contact us here so we can get back to you as soon as we have a fix for
   that issue: [https://www.mailpoet.com/support/wordpress-forums/](https://www.mailpoet.com/support/wordpress-forums/)
 *  [kingdingeling](https://wordpress.org/support/users/kingdingeling/)
 * (@kingdingeling)
 * [6 years, 5 months ago](https://wordpress.org/support/topic/fatal-error-version-3-45-1/#post-12429958)
 * We have the same error here.
    When a post will be edited, the error appears. 
   The site works ok, but we can’t do anything in the backend.
 *  [Wysija](https://wordpress.org/support/users/wysija/)
 * (@wysija)
 * [6 years, 4 months ago](https://wordpress.org/support/topic/fatal-error-version-3-45-1/#post-12458398)
 * Just make sure to update your plugin to the latest version 3.46 where this issue
   has been fixed.

Viewing 4 replies - 1 through 4 (of 4 total)

The topic ‘Fatal error – version 3.45.1’ is closed to new replies.

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## Tags

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

 * 4 replies
 * 3 participants
 * Last reply from: [Wysija](https://wordpress.org/support/users/wysija/)
 * Last activity: [6 years, 4 months ago](https://wordpress.org/support/topic/fatal-error-version-3-45-1/#post-12458398)
 * Status: resolved