Title: Error 503 Last modified: January 18, 2019 --- # Error 503 * [Trapipo](https://wordpress.org/support/users/trapipo/) * (@trapipo) * [7 years, 2 months ago](https://wordpress.org/support/topic/error-503-7/) * Hello and thank you for your pluggin. * However, I encounter some problems when using it. * First, when I put the shortcode `[a-z-listing]` in a blank page : [Screenshot-1](https://image.noelshack.com/fichiers/2019/03/5/1547801307-capture-2.jpg) and update my page, a 503 error appears : [screenshot-2](https://image.noelshack.com/fichiers/2019/03/5/1547801307-capture-1.jpg) And the published page is empty : [screenshot-3](https://image.noelshack.com/fichiers/2019/03/5/1547801307-capture-3.jpg) * I do not understand why. It’s strange. * Also, i made some test. I have 4 term for taxonomy “Format” : `01-long-metrage` 1 250 pages `02-serie` 667 pages `03-court-metrage` 181 pages `04-documentaire` 79 pages * If I put this shortcode: `[a-z-listing taxonomy = "format" terms = "02-serie"]` I have no mistakes, it works. * No problem if I use the code: `[a-z-listing taxonomy="format" terms="02-serie, 03-court-metrage,04-documentaire"]` * No problem if I use the code: `[a-z-listing taxonomy="format" terms="01-long- metrage"]` * But again 503 error if I use the code: `[a-z-listing taxonomy="format" terms ="01-long-metrage,02-serie"]` * Is the number of pages limited? - This topic was modified 7 years, 2 months ago by [Trapipo](https://wordpress.org/support/users/trapipo/). - This topic was modified 7 years, 2 months ago by [Trapipo](https://wordpress.org/support/users/trapipo/). - This topic was modified 7 years, 2 months ago by [Trapipo](https://wordpress.org/support/users/trapipo/). * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Ferror-503-7%2F%3Foutput_format%3Dmd&locale=en_US) to see the link]_ Viewing 3 replies - 1 through 3 (of 3 total) * Plugin Author [Dani Llewellyn](https://wordpress.org/support/users/diddledani/) * (@diddledani) * [7 years, 2 months ago](https://wordpress.org/support/topic/error-503-7/#post-11106713) * Hi, * For 503 errors, there is likely some information as to the nature of the error in your server’s error log. Could you see if you have access to such a log and post any lines from the time you try loading the page that results in the error? * Regarding the size of the list, this might be an issue. The plugin itself does not impose any artificial limits on the number of items in the list, but your server will impose memory and time-based limits. It could be that the size of your list is causing PHP to run out of memory or take too long to execute and gets killed because of one or other of these. If PHP is being killed because of either of these limits it would also be indicated in the error log. * Thread Starter [Trapipo](https://wordpress.org/support/users/trapipo/) * (@trapipo) * [7 years, 2 months ago](https://wordpress.org/support/topic/error-503-7/#post-11115899) * ``` [22-Jan-2019 01:14:33] WARNING: [pool www] server reached max_children setting (4), consider raising it [22-Jan-2019 01:34:47] WARNING: [pool www] server reached max_children setting (4), consider raising it [22-Jan-2019 02:26:09] WARNING: [pool www] server reached max_children setting (4), consider raising it [22-Jan-2019 04:20:57] WARNING: [pool www] server reached max_children setting (4), consider raising it [22-Jan-2019 06:14:47] WARNING: [pool www] server reached max_children setting (4), consider raising it [22-Jan-2019 07:02:20] WARNING: [pool www] server reached max_children setting (4), consider raising it [22-Jan-2019 07:02:29] WARNING: [pool www] child 6048 exited on signal 9 (SIGKILL) after 2865.814142 seconds from start [22-Jan-2019 07:04:42] WARNING: [pool www] server reached max_children setting (4), consider raising it [22-Jan-2019 07:34:33] WARNING: [pool www] server reached max_children setting (4), consider raising it [22-Jan-2019 08:26:35] WARNING: [pool www] child 6312 exited on signal 9 (SIGKILL) after 4913.243596 seconds from start [22-Jan-2019 08:26:41] WARNING: [pool www] child 6422 exited on signal 9 (SIGKILL) after 3145.487619 seconds from start [22-Jan-2019 08:26:59] WARNING: [pool www] server reached max_children setting (4), consider raising it ``` * Plugin Author [Dani Llewellyn](https://wordpress.org/support/users/diddledani/) * (@diddledani) * [7 years, 2 months ago](https://wordpress.org/support/topic/error-503-7/#post-11123244) * I can’t see anything in the log you posted that would explain the problem. Do you have a separate PHP log anywhere that might include some more information? Viewing 3 replies - 1 through 3 (of 3 total) The topic ‘Error 503’ is closed to new replies. * ![](https://s.w.org/plugins/geopattern-icon/a-z-listing_d8edfd.svg) * [A-Z Listing](https://wordpress.org/plugins/a-z-listing/) * [Frequently Asked Questions](https://wordpress.org/plugins/a-z-listing/#faq) * [Support Threads](https://wordpress.org/support/plugin/a-z-listing/) * [Active Topics](https://wordpress.org/support/plugin/a-z-listing/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/a-z-listing/unresolved/) * [Reviews](https://wordpress.org/support/plugin/a-z-listing/reviews/) * 3 replies * 2 participants * Last reply from: [Dani Llewellyn](https://wordpress.org/support/users/diddledani/) * Last activity: [7 years, 2 months ago](https://wordpress.org/support/topic/error-503-7/#post-11123244) * Status: not resolved