Title: Server error log Undefined array key “guest_uas” Last modified: September 29, 2025 --- # Server error log Undefined array key “guest_uas” * Resolved [breadf](https://wordpress.org/support/users/breadf/) * (@breadf) * [8 months, 2 weeks ago](https://wordpress.org/support/topic/server-error-log-undefined-array-key-guest_uas/) * Noticed following server error log. Frontend is ok * 2025-09-29 13:24:03.445761 [NOTICE] [102978] [T0] [127.0.0.1:14444>103.223.122.233# APVH_www.antzracing.com:443] [STDERR] PHP Warning: Undefined array key “guest_uas” in /home/admin/domains/antzracing.com/public_html/wp-content/plugins/litespeed- cache/lib/guest.cls.php on line 126\n 2025-09-29 13:24:03.445791 [NOTICE] [102978][ T0] [127.0.0.1:14444>103.223.122.233#APVH_www.antzracing.com:443] [STDERR] PHP Warning: Undefined array key “guest_ips” in /home/admin/domains/antzracing.com/ public_html/wp-content/plugins/litespeed-cache/lib/guest.cls.php on line 137\ n2025-09-29 13:24:03.445800 [NOTICE] [102978] [T0] [127.0.0.1:14444>103.223.122.233# APVH_www.antzracing.com:443] [STDERR] PHP Warning: Undefined array key “hash” in /home/admin/domains/antzracing.com/public_html/wp-content/plugins/litespeed- cache/lib/guest.cls.php on line 71\n * This one is in wp-debug log: PHP Deprecated: Creation of dynamic property LiteSpeed\ Report::$_summary is deprecated in /home/admin/domains/antzracing.com/public_html/ wp-content/plugins/litespeed-cache/src/root.cls.php on line 657 - This topic was modified 8 months, 2 weeks ago by [breadf](https://wordpress.org/support/users/breadf/). * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fserver-error-log-undefined-array-key-guest_uas%2F%3Foutput_format%3Dmd&locale=en_US) to see the link]_ Viewing 15 replies - 1 through 15 (of 19 total) 1 [2](https://wordpress.org/support/topic/server-error-log-undefined-array-key-guest_uas/page/2/?output_format=md) [→](https://wordpress.org/support/topic/server-error-log-undefined-array-key-guest_uas/page/2/?output_format=md) * Plugin Support [litetim](https://wordpress.org/support/users/litetim/) * (@litetim) * [8 months, 2 weeks ago](https://wordpress.org/support/topic/server-error-log-undefined-array-key-guest_uas/#post-18661018) * [@breadf](https://wordpress.org/support/users/breadf/) Looking into 🙂 * Plugin Support [litetim](https://wordpress.org/support/users/litetim/) * (@litetim) * [8 months, 2 weeks ago](https://wordpress.org/support/topic/server-error-log-undefined-array-key-guest_uas/#post-18661072) * [@breadf](https://wordpress.org/support/users/breadf/) I am trying to reproduce the issue, but I am not able to show me the errors, tested with different settings about Guest Mode. Can you help me with some info? * Thread Starter [breadf](https://wordpress.org/support/users/breadf/) * (@breadf) * [8 months, 2 weeks ago](https://wordpress.org/support/topic/server-error-log-undefined-array-key-guest_uas/#post-18661448) * This morning I checked again. At present there is no new error about this. * Yesterday I installed Optimization Detective, Embed Optimizer and Image Prioritizer, and Speculative Loading, Performant Translations, Instant Back/Forward, View Transitions. Then I noticed the error. I’ve deactivated all but “Instant Back/ Forward, View Transitions”. Report number: **BSTZRSGQ** * Plugin Support [litetim](https://wordpress.org/support/users/litetim/) * (@litetim) * [8 months, 2 weeks ago](https://wordpress.org/support/topic/server-error-log-undefined-array-key-guest_uas/#post-18661815) * [@breadf](https://wordpress.org/support/users/breadf/) ok Please observe if the notices will appear in the future * Thread Starter [breadf](https://wordpress.org/support/users/breadf/) * (@breadf) * [8 months, 2 weeks ago](https://wordpress.org/support/topic/server-error-log-undefined-array-key-guest_uas/#post-18661900) * Ok. * Thread Starter [breadf](https://wordpress.org/support/users/breadf/) * (@breadf) * [8 months, 1 week ago](https://wordpress.org/support/topic/server-error-log-undefined-array-key-guest_uas/#post-18667076) * Hi server logged this error again, but I didn’t notice the error in wp debug log: _2025-10-03 15:04:17.808545 [NOTICE] [114107] [T0] [127.0.0.1:14944>66.249.73.233# APVH\_www.antzracing.com:443] [STDERR] PHP Warning: Undefined array key “guest\ _uas” in /home/admin/domains/antzracing.com/public\_html/wp-content/plugins/litespeed- cache/lib/guest.cls.php on line 126\n2025-10-03 15:04:17.808553 [NOTICE] [114107][ T0] [127.0.0.1:14944>66.249.73.233#APVH\_www.antzracing.com:443] [STDERR] PHP Warning: Undefined array key “guest\_ips” in /home/admin/domains/antzracing.com/ public\_html/wp-content/plugins/litespeed-cache/lib/guest.cls.php on line 137\ n2025-10-03 15:04:17.808572 [NOTICE] [114107] [T0] [127.0.0.1:14944>66.249.73.233# APVH\_www.antzracing.com:443] [STDERR] PHP Warning: Undefined array key “hash” in /home/admin/domains/antzracing.com/public\_html/wp-content/plugins/litespeed- cache/lib/guest.cls.php on line 71\n * Plugin Support [litetim](https://wordpress.org/support/users/litetim/) * (@litetim) * [8 months, 1 week ago](https://wordpress.org/support/topic/server-error-log-undefined-array-key-guest_uas/#post-18667175) * [@breadf](https://wordpress.org/support/users/breadf/) Is the site a multisite? Does the logs appear while crawler was running? * Thread Starter [breadf](https://wordpress.org/support/users/breadf/) * (@breadf) * [8 months, 1 week ago](https://wordpress.org/support/topic/server-error-log-undefined-array-key-guest_uas/#post-18667181) * It’s not multisite Not sure if it appeared while crawler was running. This is the 2nd time it appeared, but I’ve manually run crawler several times. * Plugin Support [litetim](https://wordpress.org/support/users/litetim/) * (@litetim) * [8 months, 1 week ago](https://wordpress.org/support/topic/server-error-log-undefined-array-key-guest_uas/#post-18667441) * [@breadf](https://wordpress.org/support/users/breadf/) on server FTP on path `/ public_html/wp-content` do you have file: `.litespeed_conf.dat`? Does it have content? - This reply was modified 8 months, 1 week ago by [litetim](https://wordpress.org/support/users/litetim/). * Plugin Support [litetim](https://wordpress.org/support/users/litetim/) * (@litetim) * [8 months, 1 week ago](https://wordpress.org/support/topic/server-error-log-undefined-array-key-guest_uas/#post-18667467) * I was able to reproduce the logs by deleting the file OR emptying it’s content. * Thread Starter [breadf](https://wordpress.org/support/users/breadf/) * (@breadf) * [8 months, 1 week ago](https://wordpress.org/support/topic/server-error-log-undefined-array-key-guest_uas/#post-18667614) * [@litetim](https://wordpress.org/support/users/litetim/) Yes _`.litespeed\_conf. dat` _exists in `_/public\_html/wp-content_` * Below is its content: `_{"debug":0,"object-kind":true,"object-host":"\/home\/ admin\/.redis\/redis.sock","object-port":0,"object-life":360,"object-user":""," object-pswd":"","object-db\_id":0,"object-persistent":true,"object-admin":true," object-transients":false,"object-global\_groups":["users","userlogins","useremail"," userslugs","usermeta","user\_meta","site-transient","site-options","site-lookup"," site-details","blog-lookup","blog-details","blog-id-cache","rss","global-posts"," global-cache-test"],"object-non\_persistent\_groups":[]}_` * Plugin Support [litetim](https://wordpress.org/support/users/litetim/) * (@litetim) * [8 months, 1 week ago](https://wordpress.org/support/topic/server-error-log-undefined-array-key-guest_uas/#post-18669917) * [@breadf](https://wordpress.org/support/users/breadf/) thank you. Let me look over the code and I will come back with some code or updates * Plugin Support [litetim](https://wordpress.org/support/users/litetim/) * (@litetim) * [8 months, 1 week ago](https://wordpress.org/support/topic/server-error-log-undefined-array-key-guest_uas/#post-18670366) * [@breadf](https://wordpress.org/support/users/breadf/) I have looked over the code and _`.litespeed\_conf.dat`_ file content + report It seems you have Object Cache OFF so the setting will not appear.We should add some code to make sure the warning will not appear.We have in LSC => Toolbox => Beta Tab => Insert into input: [https://github.com/timotei-litespeed/lscache_wp/commit/61a2ec0d9d008d076b00cabf820955421ee18111](https://github.com/timotei-litespeed/lscache_wp/commit/61a2ec0d9d008d076b00cabf820955421ee18111) And click on **Upgrate**This is a future version, but the code contains the fix for the warning.Please test and tell me how is working * Thread Starter [breadf](https://wordpress.org/support/users/breadf/) * (@breadf) * [8 months, 1 week ago](https://wordpress.org/support/topic/server-error-log-undefined-array-key-guest_uas/#post-18670671) * [@litetim](https://wordpress.org/support/users/litetim/) Thanks. I will apply this fix. redis object cache is on. I was using Redis Object Cache plugin and then changed to litespeed cache’s object cache according to WPML’s suggestion. Aside redis, I have APCU, not sure if this would affect this or not? * Thread Starter [breadf](https://wordpress.org/support/users/breadf/) * (@breadf) * [8 months, 1 week ago](https://wordpress.org/support/topic/server-error-log-undefined-array-key-guest_uas/#post-18670698) * After applying there is a new log: _[07-Oct-2025 01:08:59 UTC] PHP Notice: Function\ _load\_textdomain\_just\_in\_time was called **incorrectly**. Translation loading for the `litespeed-cache` domain was triggered too early. This is usually an indicator for some code in the plugin or theme running too early. Translations should be loaded at the `init` action or later. Please see [Debugging in WordPress](https://developer.wordpress.org/advanced-administration/debug/debug-wordpress/) for more information. (This message was added in version 6.7.0.) in /home/admin/ domains/antzracing.com/public\_html/wp-includes/functions.php on line 6121_ Viewing 15 replies - 1 through 15 (of 19 total) 1 [2](https://wordpress.org/support/topic/server-error-log-undefined-array-key-guest_uas/page/2/?output_format=md) [→](https://wordpress.org/support/topic/server-error-log-undefined-array-key-guest_uas/page/2/?output_format=md) The topic ‘Server error log Undefined array key “guest_uas”’ is closed to new replies. * ![](https://ps.w.org/litespeed-cache/assets/icon-256x256.png?rev=2554181) * [LiteSpeed Cache](https://wordpress.org/plugins/litespeed-cache/) * [Frequently Asked Questions](https://wordpress.org/plugins/litespeed-cache/#faq) * [Support Threads](https://wordpress.org/support/plugin/litespeed-cache/) * [Active Topics](https://wordpress.org/support/plugin/litespeed-cache/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/litespeed-cache/unresolved/) * [Reviews](https://wordpress.org/support/plugin/litespeed-cache/reviews/) * 19 replies * 2 participants * Last reply from: [breadf](https://wordpress.org/support/users/breadf/) * Last activity: [8 months ago](https://wordpress.org/support/topic/server-error-log-undefined-array-key-guest_uas/page/2/#post-18671812) * Status: resolved