Title: White page error Last modified: May 5, 2021 --- # White page error * Resolved [cameliav](https://wordpress.org/support/users/cameliav/) * (@cameliav) * [5 years, 2 months ago](https://wordpress.org/support/topic/white-page-error-4/) * Hello, I whant to buy this plugin but I have an issue on our demo sito, cyclically the site crashes and a blank page appears, to reactivate it, the functions “Clear cache every 24 hours”, header cache “and I deactivate and reactivate the plugin. After this everything starts working again, but after a couple of days it starts again. * This is the error, when I active the log: “Php messages: php fatal error: allowed memory size of 134217728 bytes exhausted” * How can I solve? * Thank you in advanced, Camelia V. - This topic was modified 5 years, 2 months ago by [cameliav](https://wordpress.org/support/users/cameliav/). * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fwhite-page-error-4%2F%3Foutput_format%3Dmd&locale=en_US) to see the link]_ Viewing 4 replies - 1 through 4 (of 4 total) * Plugin Support [Laura – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support8/) * (@wpmudev-support8) * [5 years, 2 months ago](https://wordpress.org/support/topic/white-page-error-4/#post-14403277) * Hi [@cameliav](https://wordpress.org/support/users/cameliav/) * I hope you’re well today and thank you for contacting us! * The error that you are getting, along with described behavior, suggests that there’s some conflict on site – with another plugin or active theme – but it’s difficult to say with what based on that error only. * If there is any other caching and/or optimization plugin active on site currently, start with that – clear all caches and disable these other caches/asset optimization plugins and see if that changes anything. * if not, the way to identify such conflict would be a full conflict test which is basically: * – deactivating all plugins (except Hummingbird) and switching theme to Twenty Twenty-One – checking if the issue happens – if it doesn’t – enabling plugins one by one after each one checking for the issue until it happens again and the last enabled plugin (or the theme) would be the conflicting one. * I understand that this might be difficult to conduct in this case, especially on a live site, due to the very nature of the issue – so it might be good to setup a staging site (“cloned” version of the site on the same server) to test it there. * But I’d start with checking first for all other caches/optimization tools that might be running at the same time on site/server and trying to disable them first to see if that helps and if not (or there are no such plugins) then a full conflict test would be way to go. * Knowing about conflicting plugin we could then look into it closer to find out why it’s conflicting and how to fix it. * Kind regards, Adam * Thread Starter [cameliav](https://wordpress.org/support/users/cameliav/) * (@cameliav) * [5 years, 2 months ago](https://wordpress.org/support/topic/white-page-error-4/#post-14407905) * Hello Adam, * I no longer have other cache plug-ins installed and testing compatibility with other plug-ins is difficult, because the error appears after a couple of days, for the moment I deselect the “Cache every 24 hours” function to see if the error come back after this i’ll let you know. * Ps: this is a demo site, not the main site. * Thank you for your help. * Plugin Support [Saurabh – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support7/) * (@wpmudev-support7) * [5 years, 2 months ago](https://wordpress.org/support/topic/white-page-error-4/#post-14411453) * Hello [@cameliav](https://wordpress.org/support/users/cameliav/), * Sounds good. Also, as this is a demo site, what you can do is turn on debug logging and then see if the debug log files records any errors. You can learn more about debug logging here: [https://wordpress.org/support/article/debugging-in-wordpress/#example-wp-config-php-for-debugging](https://wordpress.org/support/article/debugging-in-wordpress/#example-wp-config-php-for-debugging) * Also, if the issue happens again, here is the list of things we would need: * 1.PHP Version 2.WP version 3.Theme Name & Version 4.Plugin conflict test done Yes/No? 5.If you tried turning on Debug logging, the debug log files last 10 lines if generated. * Looking forward to hearing from you on it. * Thank you, Prathamesh Palve * Plugin Support [Nithin – WPMU DEV Support](https://wordpress.org/support/users/wpmudevsupport11/) * (@wpmudevsupport11) * [5 years, 1 month ago](https://wordpress.org/support/topic/white-page-error-4/#post-14438459) * Hi [@cameliav](https://wordpress.org/support/users/cameliav/), * Since we haven’t heard from you in a while, I’ll mark this thread as resolved for now. Please feel free to re-open the thread if you need further assistance. * Best Regards Nithin Viewing 4 replies - 1 through 4 (of 4 total) The topic ‘White page error’ is closed to new replies. * ![](https://ps.w.org/hummingbird-performance/assets/icon-256x256.gif?rev=2633221) * [Hummingbird Performance - Cache & Page Speed Optimization for Core Web Vitals | Critical CSS | Minify CSS | Defer CSS Javascript | CDN](https://wordpress.org/plugins/hummingbird-performance/) * [Frequently Asked Questions](https://wordpress.org/plugins/hummingbird-performance/#faq) * [Support Threads](https://wordpress.org/support/plugin/hummingbird-performance/) * [Active Topics](https://wordpress.org/support/plugin/hummingbird-performance/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/hummingbird-performance/unresolved/) * [Reviews](https://wordpress.org/support/plugin/hummingbird-performance/reviews/) * 4 replies * 4 participants * Last reply from: [Nithin – WPMU DEV Support](https://wordpress.org/support/users/wpmudevsupport11/) * Last activity: [5 years, 1 month ago](https://wordpress.org/support/topic/white-page-error-4/#post-14438459) * Status: resolved