Fatal error “Undefined constant ‘AUTH_KEY'” and APCUIterator issues

  • Resolved fippy

    (@dgilfillan)


    1 year, 1 month ago

    After activating Atec Cache APCu, I consistently encounter a fatal error: PHP Fatal error: Uncaught Error: Undefined constant "AUTH_KEY" in /wp-content/object-cache.php:75. This error seems to prevent the site from loading correctly.

    Additionally, I’m seeing warnings and fatal errors related to APCUIterator when certain actions are performed on the site, specifically:

    PHP Warning: APCUIterator::__construct(): Unknown modifier '_' in /wp-content/object-cache.php on line 129

    PHP Fatal error: APCUIterator::__construct(): Could not compile regular expression: /[some pattern]/ in /wp-content/object-cache.php on line 129

    Deactivating the Atec Cache APCu plugin resolves the ‘AUTH_KEY’ error and the APCUIterator issues disappear. It appears there might be a conflict or incompatibility causing these problems.

    Has anyone else experienced this, or are there any known solutions or configurations I should be aware of?

Viewing 4 replies - 1 through 4 (of 4 total)
  • Plugin Author docjojo

    (@docjojo)

    1 year, 1 month ago

    Hello,

    AUTH_KEY is an important constant of your WP installation.
    Please check your wp-config for missing keys.

    define( ‘AUTH_KEY’, ‘GG}743y1Dht!bvm`3Dv:HZK+li&LQ6;y8LjTKH4$I-S(;K>P!kI11b%xF*3>KAU@’ );

    If this key is not defined, this will also lead to other problems.

    Feel free to send this part of your wp-config.php as a private message via our homepage so that we can further assist.

    Plugin Author docjojo

    (@docjojo)

    11 months, 3 weeks ago

    New version is available, please update and let me know.

    andreas47

    (@andreas47)

    11 months ago

    Same problem here with the latest version. Seems to have something to do with wp-cron.php. If we activate the atec cache, we often get this error combined with “missed schedule” problem.

    Plugin Author docjojo

    (@docjojo)

    11 months ago

    Thank you.
    I have fixed another issue.
    New version is available, please update and let me know.

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

The topic ‘Fatal error “Undefined constant ‘AUTH_KEY'” and APCUIterator issues’ is closed to new replies.