Title: Fatal Errors
Last modified: September 27, 2025

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# Fatal Errors

 *  Resolved [jonahcoyote](https://wordpress.org/support/users/jonahcoyote/)
 * (@jonahcoyote)
 * [8 months, 2 weeks ago](https://wordpress.org/support/topic/fatal-errors-112/)
 * Hi guys,
 * Seeing a bunch of fatal errors across my sites using the pro version of the plugin.
   Here’s the error:
 * `An error of type E_ERROR was caused in line 131 of the file /wp-content/plugins/
   login-lockdown/libs/functions.php. Error message: Uncaught TypeError: array_key_exists():
   Argument #2 ($array) must be of type array, bool given in /wp-content/plugins/
   login-lockdown/libs/functions.php:131 Stack trace: #0 /wp-content/plugins/login-
   lockdown/libs/functions.php(362): LoginLockdown_Functions::is_rest_request() #
   1 /wp-includes/class-wp-hook.php(324): LoginLockdown_Functions::wp_authenticate_username_password()#
   2 /wp-includes/plugin.php(205): WP_Hook->apply_filters() #3 /wp-includes/pluggable.
   php(623): apply_filters() #4 /wp-includes/user.php(109): wp_authenticate() #5/
   wp-login.php(1323): wp_signon() #6 {main} thrown`

Viewing 1 replies (of 1 total)

 *  Plugin Author [Alexandru Tapuleasa](https://wordpress.org/support/users/talextech/)
 * (@talextech)
 * [8 months, 2 weeks ago](https://wordpress.org/support/topic/fatal-errors-112/#post-18659282)
 * This forum is only for the free version. For PRO related support please contact
   us through the website or the support widget in the plugin. But to give you a
   quick answer most likely it’s a compatibility issue with something else that 
   is affecting the url of a REST request.

Viewing 1 replies (of 1 total)

The topic ‘Fatal Errors’ is closed to new replies.

 * ![](https://ps.w.org/login-lockdown/assets/icon-256x256.png?rev=2901919)
 * [Login Lockdown & Protection](https://wordpress.org/plugins/login-lockdown/)
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 * 1 reply
 * 2 participants
 * Last reply from: [Alexandru Tapuleasa](https://wordpress.org/support/users/talextech/)
 * Last activity: [8 months, 2 weeks ago](https://wordpress.org/support/topic/fatal-errors-112/#post-18659282)
 * Status: resolved