Title: array_map() Error Last modified: August 30, 2016 --- # array_map() Error * Resolved [Opa114](https://wordpress.org/support/users/opa114/) * (@opa114) * [10 years, 5 months ago](https://wordpress.org/support/topic/array_map-error/) * I use the latest version of Events Manager and i did regognize an error like the last on with the categories of events manager enabled. * When i disable the categories and try to edit an old event which i have published and want so save it i got the following error: * ``` Warning: array_map(): Argument #2 should be an array in /..../wp/wp-includes/category-template.php on line 1158 Warning: Cannot modify header information - headers already sent by (output started at /..../wp/wp-includes/category-template.php:1158) in /..../wp/wp-admin/post.php on line 197 Warning: Cannot modify header information - headers already sent by (output started at /..../wp/wp-includes/category-template.php:1158) in /..../wp/wp-includes/pluggable.php on line 1228 ``` * So this error looks similiar to the last one, where WordPress 4.4 was released. there the array_map() Error was on the Frontend. Hope you could reproduce the error and fix it. * When i have categories enabled all works perfectly. * [https://wordpress.org/plugins/events-manager/](https://wordpress.org/plugins/events-manager/) Viewing 15 replies - 1 through 15 (of 26 total) 1 [2](https://wordpress.org/support/topic/array_map-error/page/2/?output_format=md) [→](https://wordpress.org/support/topic/array_map-error/page/2/?output_format=md) * [caimin_nwl](https://wordpress.org/support/users/caimin_nwl/) * (@caimin_nwl) * [10 years, 4 months ago](https://wordpress.org/support/topic/array_map-error/#post-6881290) * Can you confirm which version of Events Manager you’re using? * Thread Starter [Opa114](https://wordpress.org/support/users/opa114/) * (@opa114) * [10 years, 4 months ago](https://wordpress.org/support/topic/array_map-error/#post-6881293) * latest 5.6.2. * I used the one before 5.6.1 on which the error appears on the front-end when i have the calendar or eventlist in my sidebar since wordpress 4.4. (there are two therads here on which it was discuessed and fixed with 5.6.2!) * But my error only appears when i have categories DISABLED and edit an event which i have created. Then when i ENAABLE categories and edit an old event there is no error. * [emswpuser](https://wordpress.org/support/users/emswpuser/) * (@emswpuser) * [10 years, 4 months ago](https://wordpress.org/support/topic/array_map-error/#post-6881309) * I’m getting a similar error with 5.6.2: * Warning: array_map() [function.array-map]: Argument #2 should be an array in / home/…/public_html/wp-includes/category-template.php on line 1158 * Warning: Cannot modify header information – headers already sent by (output started at /home/tappedou/public_html/wp-includes/category-template.php:1158) in /home/…/ public_html/wp-admin/post.php on line 197 * [Marcel Oerlemans](https://wordpress.org/support/users/marceloerlemans/) * (@marceloerlemans) * [10 years, 4 months ago](https://wordpress.org/support/topic/array_map-error/#post-6881322) * Hi, I’m getting the error to, frontend.. Warning: array_map(): Argument #2 should be an array in /home/…/public_html/wp/wp-includes/category-template.php on line 1158 * I use the latest version of Events Manager, WP and other software.. * Hope someone can figure this out, I’m not a programmer.. 🙁 * [caimin_nwl](https://wordpress.org/support/users/caimin_nwl/) * (@caimin_nwl) * [10 years, 4 months ago](https://wordpress.org/support/topic/array_map-error/#post-6881338) * [@opa114](https://wordpress.org/support/users/opa114/) Is the old event you’re trying to publish in a category (or was it before you disabled categories)? * [@marcel](https://wordpress.org/support/users/marcel/) Oerlemans Do you see this error when event categories are enabled, disabled or both? * Thread Starter [Opa114](https://wordpress.org/support/users/opa114/) * (@opa114) * [10 years, 4 months ago](https://wordpress.org/support/topic/array_map-error/#post-6881339) * [@caimin_nwl](https://wordpress.org/support/users/caimin_nwl/): no the event i try to update! (not to publish a new one) has no category. I have disabled categories from beginning on, because i don’t need them. * [Marcel Oerlemans](https://wordpress.org/support/users/marceloerlemans/) * (@marceloerlemans) * [10 years, 4 months ago](https://wordpress.org/support/topic/array_map-error/#post-6881346) * [@caimin_nwl](https://wordpress.org/support/users/caimin_nwl/) : the categories were disabled when the error was shown. I tried to enable the categories but the error still appeared, so I disabled them again. * The website with the error is: [http://golf-open.nl/events/all-inclusive-eindejaarswedstrijd/](http://golf-open.nl/events/all-inclusive-eindejaarswedstrijd/) * Is it possible to disable errors on frontend? * [caimin_nwl](https://wordpress.org/support/users/caimin_nwl/) * (@caimin_nwl) * [10 years, 4 months ago](https://wordpress.org/support/topic/array_map-error/#post-6881362) * You should be able disable errors by adding this line to your wp-config.php file: * `error_reporting(0);` * Thread Starter [Opa114](https://wordpress.org/support/users/opa114/) * (@opa114) * [10 years, 4 months ago](https://wordpress.org/support/topic/array_map-error/#post-6881363) * [@caimin_nwl](https://wordpress.org/support/users/caimin_nwl/): could you repdroduce the error which i’m talking about? if not, i could maybe send you some login data to my wordpress hosting, so that you can see it in action?! * Plugin Support [angelo_nwl](https://wordpress.org/support/users/angelo_nwl/) * (@angelo_nwl) * [10 years, 4 months ago](https://wordpress.org/support/topic/array_map-error/#post-6881366) * hi, * this issue is already been reported however you can try to enable events category or tag under events > settings > general > general options for now. * Thread Starter [Opa114](https://wordpress.org/support/users/opa114/) * (@opa114) * [10 years, 4 months ago](https://wordpress.org/support/topic/array_map-error/#post-6881367) * yes i knwo that it has been reported, but i asked if you oudl reproduce the error/ bug? I have enabled categories to solve it temporarly. * [Marcel Oerlemans](https://wordpress.org/support/users/marceloerlemans/) * (@marceloerlemans) * [10 years, 4 months ago](https://wordpress.org/support/topic/array_map-error/#post-6881369) * Hi caimin_nwl, Thanks for your response! I tried disabling category / tag and various combinations, but nothing worked. How do I use the error_reporting(0) in WP-config? I tried the following: * ``` define('WP_DEBUG', false); define('WP_DEBUG_DISPLAY', false ); define('ERROR_REPORTING', 0 ); ``` * But that doesn’t work either… I can’t only disable the error with CSS because there is more in the post-meta class than just the error.. Hope you can still help me out with this! Best regards, Marcel * [emswpuser](https://wordpress.org/support/users/emswpuser/) * (@emswpuser) * [10 years, 4 months ago](https://wordpress.org/support/topic/array_map-error/#post-6881370) * I enabled event categories. Cleared cache on Mac Safari. Sometimes a new event goes through, but other times when I try to publish, it gives the error. * Warning: array_map() [function.array-map]: Argument #2 should be an array in / home/…/public_html/wp-includes/category-template.php on line 1158 * Warning: Cannot modify header information – headers already sent by (output started at /home/tappedou/public_html/wp-includes/category-template.php:1158) in /home/…/ public_html/wp-admin/post.php on line 197 * [jonwolfinger](https://wordpress.org/support/users/jonwolfinger/) * (@jonwolfinger) * [10 years, 4 months ago](https://wordpress.org/support/topic/array_map-error/#post-6881372) * I am having the same problem on one of my sites. I don’t use categories normally but enabling them temporarily seems to be a temp fix for single events only. Reoccurring events still experience the error code: * Warning: array_map(): Argument #2 should be an array in /wp-includes/category- template.php on line 1158 * Warning: Cannot modify header information – headers already sent by (output started at /wp-includes/category-template.php:1158) in /wp-admin/post.php on line 197 * Warning: Cannot modify header information – headers already sent by (output started at /wp-includes/category-template.php:1158) in /wp-includes/pluggable.php on line 1228 * [caimin_nwl](https://wordpress.org/support/users/caimin_nwl/) * (@caimin_nwl) * [10 years, 4 months ago](https://wordpress.org/support/topic/array_map-error/#post-6881383) * Which version of Events Manager and WordPress are you guys using? Viewing 15 replies - 1 through 15 (of 26 total) 1 [2](https://wordpress.org/support/topic/array_map-error/page/2/?output_format=md) [→](https://wordpress.org/support/topic/array_map-error/page/2/?output_format=md) The topic ‘array_map() Error’ is closed to new replies. * ![](https://ps.w.org/events-manager/assets/icon-256x256.png?rev=1039078) * [Events Manager - Calendar, Bookings, Tickets, and more!](https://wordpress.org/plugins/events-manager/) * [Frequently Asked Questions](https://wordpress.org/plugins/events-manager/#faq) * [Support Threads](https://wordpress.org/support/plugin/events-manager/) * [Active Topics](https://wordpress.org/support/plugin/events-manager/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/events-manager/unresolved/) * [Reviews](https://wordpress.org/support/plugin/events-manager/reviews/) ## Tags * [array_map()](https://wordpress.org/support/topic-tag/array_map/) * [categories](https://wordpress.org/support/topic-tag/categories/) * 26 replies * 8 participants * Last reply from: [NikkiCasa](https://wordpress.org/support/users/nikkicasa/) * Last activity: [10 years, 1 month ago](https://wordpress.org/support/topic/array_map-error/page/2/#post-6881475) * Status: resolved