Title: Fatal Error hsts_plugin_get_headers()
Last modified: September 15, 2025

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# Fatal Error hsts_plugin_get_headers()

 *  Resolved [Dessi Cubbex](https://wordpress.org/support/users/dessicubbex/)
 * (@dessicubbex)
 * [8 months, 2 weeks ago](https://wordpress.org/support/topic/fatal-error-hsts_plugin_get_headers/)
 * There’s fatal error:
   hsts_plugin_get_headers(): Argument #1 ($headers) must be
   of type array, null given, called in /wp-includes/class-wp-hook.php on line 326
   and defined in /wp-content/plugins/headers-security-advanced-hsts-wp/headers-
   security-advanced-hsts-wp.php:30

Viewing 1 replies (of 1 total)

 *  Plugin Author [Andrea Ferro](https://wordpress.org/support/users/unicorn03/)
 * (@unicorn03)
 * [6 months, 3 weeks ago](https://wordpress.org/support/topic/fatal-error-hsts_plugin_get_headers/#post-18710723)
 * Hi **[@dessicubbex](https://wordpress.org/support/users/dessicubbex/),**
 * Thanks for using the plugin and for your topic. For some reason, I’m having trouble
   receiving notifications for open topics.
 * I have identified the cause, which has been resolved in version 5.1.0 released
   a short while ago. I have also released another version with additional fixes
   in version 5.1.1, which is currently available and corrects the reported issue.
 * Thank you again for your feedback. If you need more information or assistance,
   please feel free to write to me.

Viewing 1 replies (of 1 total)

The topic ‘Fatal Error hsts_plugin_get_headers()’ is closed to new replies.

 * ![](https://ps.w.org/headers-security-advanced-hsts-wp/assets/icon.svg?rev=3102785)
 * [Headers Security Advanced & HSTS WP](https://wordpress.org/plugins/headers-security-advanced-hsts-wp/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/headers-security-advanced-hsts-wp/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/headers-security-advanced-hsts-wp/)
 * [Active Topics](https://wordpress.org/support/plugin/headers-security-advanced-hsts-wp/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/headers-security-advanced-hsts-wp/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/headers-security-advanced-hsts-wp/reviews/)

 * 1 reply
 * 2 participants
 * Last reply from: [Andrea Ferro](https://wordpress.org/support/users/unicorn03/)
 * Last activity: [6 months, 3 weeks ago](https://wordpress.org/support/topic/fatal-error-hsts_plugin_get_headers/#post-18710723)
 * Status: resolved