Title: Fatal Error Suddenly Appeared Last modified: May 12, 2026 --- # Fatal Error Suddenly Appeared * Resolved [charmedchicken](https://wordpress.org/support/users/charmedchicken/) * (@charmedchicken) * [2 days, 1 hour ago](https://wordpress.org/support/topic/fatal-error-suddenly-appeared/) * I went to log into my website after working on it just fine last night and received fatal errors: An error of type `E_ERROR` was caused in line `162` of the file`/ home/(directory)/(URL)/wp-content/plugins/event-tickets/common/src/Common/Libraries/ Harbor.php`. Error message: `Uncaught Error: Call to undefined method Tribe__PUE__Checker:: is_key_valid() in /home/``(directory)/(URL)`/wp-content/plugins/event-tickets/ common/src/Common/Libraries/Harbor.php:162 Stack trace: #0 /home/chiclezd/petgriefpathfinder. com/wp-includes/class-wp-hook.php(341): TEC\Common\Libraries\Harbor->register_legacy_licenses()# 1 /home/`(directory)/(URL)`/wp-includes/plugin.php(205): WP_Hook->apply_filters()# 2 /home/`(directory)/(URL)`/wp-content/plugins/event-tickets/common/vendor/vendor- prefixed/stellarwp/harbor/src/Harbor/Legacy/License_Repository.php(32): apply_filters()# 3 /home/`(directory)/(URL)`/`wp-content/plugins/event-tickets/common/vendor/vendor- prefixed/stellarwp/harbor/src/Harbor/Legacy/License_Repository.php(76): TEC\Common\ LiquidWeb\Harbor\Legacy\License_Repository->all() #4 /home/``(directory)/(URL)`/ wp-content/plugins/event-tickets/common/vendor/vendor-prefixed/stellarwp/harbor/ src/Harbor/Legacy/Notices/License_Notice_Handler.php(75): TEC\Common\LiquidWeb\ Harbor\Legacy\License_Repository->all_inactive() #5 /home/`(directory)/(URL)`/ wp-includes/class-wp-hook.php(339): TEC\Common\LiquidWeb\Harbor\Legacy\Notices\ License_Notice_Handler->display() #6 /home/`(directory)/(URL)`/wp-includes/class- wp-hook.php(365): WP_Hook->apply_filters() #7 /home/`(directory)/(URL)`/wp-includes/ plugin.php(522): WP_Hook->do_action() #8 /home/`(directory)/(URL)`/wp-admin/admin- header.php(313): do_action() #9 /home/`(directory)/(URL)`/wp-admin/index.php( 137): require_once('/home/chiclezd/...') #10 {main} thrown Viewing 6 replies - 1 through 6 (of 6 total) * Plugin Author [Dimitris Pantazis](https://wordpress.org/support/users/dpantazis/) * (@dpantazis) * [2 days, 1 hour ago](https://wordpress.org/support/topic/fatal-error-suddenly-appeared/#post-18906325) * hey [@charmedchicken](https://wordpress.org/support/users/charmedchicken/), Can you help us a bit more with some information ? What were you doing when you received the error ?Have you by any chance any customization where you overwrite the default` Tribe__PUE__Checker` implementation ?The more details you can provide us for us to reproduce, the faster we will fix it.Thank you,Dimi * Thread Starter [charmedchicken](https://wordpress.org/support/users/charmedchicken/) * (@charmedchicken) * [2 days, 1 hour ago](https://wordpress.org/support/topic/fatal-error-suddenly-appeared/#post-18906328) * Error appeared immediately after logging into wp-admin. AFAIK I wasn’t doing anything. No customization to that item. I did add a custom line in the tag using the free WP Code plugin last night to add some information for formr forms, but then did quite a bit more updates creating a page/adding content/etc. and never received any error messages. * Plugin Author [Dimitris Pantazis](https://wordpress.org/support/users/dpantazis/) * (@dpantazis) * [2 days, 1 hour ago](https://wordpress.org/support/topic/fatal-error-suddenly-appeared/#post-18906330) * Ok thank you. Is that error consistent ? So you get it every time if you do a specific set of actions ? Or was it just a one off ? if it is consistent, all that you are doing is just opening your wp-admin to receive it ? * Thread Starter [charmedchicken](https://wordpress.org/support/users/charmedchicken/) * (@charmedchicken) * [2 days, 1 hour ago](https://wordpress.org/support/topic/fatal-error-suddenly-appeared/#post-18906331) * It has been consistent this afternoon. I simply type in (url)/wp-admin and hit enter in my browser and I get the fatal error message and email from wordpress. I have to go into recovery mode with both event tickets and the events calendar plugins deactivated in order to access my admin site. (Note I also made a post on the events calendar so you’d have a record on both plugins.) * Plugin Author [Dimitris Pantazis](https://wordpress.org/support/users/dpantazis/) * (@dpantazis) * [1 day, 6 hours ago](https://wordpress.org/support/topic/fatal-error-suddenly-appeared/#post-18907087) * Hey [@charmedchicken](https://wordpress.org/support/users/charmedchicken/), Latest release is meant to also address the issue you faced.Could you please confirm? Thank you! * Thread Starter [charmedchicken](https://wordpress.org/support/users/charmedchicken/) * (@charmedchicken) * [1 day, 6 hours ago](https://wordpress.org/support/topic/fatal-error-suddenly-appeared/#post-18907124) * Yes. I have upgraded both plugins and it allowed me to exit recovery mode without an additional fatal error. Thanks. Viewing 6 replies - 1 through 6 (of 6 total) You must be [logged in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Ffatal-error-suddenly-appeared%2F%3Foutput_format%3Dmd&locale=en_US) to reply to this topic. * ![](https://ps.w.org/event-tickets/assets/icon.svg?rev=2259340) * [Event Tickets and Registration](https://wordpress.org/plugins/event-tickets/) * [Frequently Asked Questions](https://wordpress.org/plugins/event-tickets/#faq) * [Support Threads](https://wordpress.org/support/plugin/event-tickets/) * [Active Topics](https://wordpress.org/support/plugin/event-tickets/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/event-tickets/unresolved/) * [Reviews](https://wordpress.org/support/plugin/event-tickets/reviews/) ## Tags * [fatal error](https://wordpress.org/support/topic-tag/fatal-error/) * 6 replies * 2 participants * Last reply from: [charmedchicken](https://wordpress.org/support/users/charmedchicken/) * Last activity: [1 day, 6 hours ago](https://wordpress.org/support/topic/fatal-error-suddenly-appeared/#post-18907124) * Status: resolved