Title: Plugin error Last modified: September 5, 2019 --- # Plugin error * Resolved [D#EER@J](https://wordpress.org/support/users/dheerajmanral/) * (@dheerajmanral) * [6 years, 7 months ago](https://wordpress.org/support/topic/plugin-error-132/) * Upgrade version 2.1.0 is giving following error- * Warning: include_once(/wp-content/plugins/hummingbird-performance/core/class- abstract-module.php): failed to open stream: No such file or directory * Warning: include_once(): Failed opening ‘/wp-content/plugins/hummingbird-performance/ core/class-abstract-module.php’ for inclusion (include_path=’.:/usr/local/php71/ pear’) * How to fix this? - This topic was modified 6 years, 7 months ago by [D#EER@J](https://wordpress.org/support/users/dheerajmanral/). Viewing 15 replies - 1 through 15 (of 17 total) 1 [2](https://wordpress.org/support/topic/plugin-error-132/page/2/?output_format=md) [→](https://wordpress.org/support/topic/plugin-error-132/page/2/?output_format=md) * Plugin Support [Amin – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support2/) * (@wpmudev-support2) * [6 years, 7 months ago](https://wordpress.org/support/topic/plugin-error-132/#post-11903092) * Hello [@dheerajmanral](https://wordpress.org/support/users/dheerajmanral/) , * I’m sorry to hear about this issue with our plugin. * I have tested it on my lab site and I wasn’t able to replicate those warnings. * Can you try to reinstall plugin? If that won’t help can you tell me what PHP version you have on your server? * kind regards, Kasia * [Anton Vanyukov](https://wordpress.org/support/users/vanyukov/) * (@vanyukov) * [6 years, 7 months ago](https://wordpress.org/support/topic/plugin-error-132/#post-11916366) * [@dheerajmanral](https://wordpress.org/support/users/dheerajmanral/), * I’ve released an update with the fix for the issue. Sorry for that. * Best regards, Anton * Thread Starter [D#EER@J](https://wordpress.org/support/users/dheerajmanral/) * (@dheerajmanral) * [6 years, 7 months ago](https://wordpress.org/support/topic/plugin-error-132/#post-11920957) * Thank you for the update * [YSMR](https://wordpress.org/support/users/ysmr/) * (@ysmr) * [6 years, 6 months ago](https://wordpress.org/support/topic/plugin-error-132/#post-11980654) * I’m getting a similar error which shows in the header of my blog AND my WP dashboard. The Hummingbird plugin isn’t showing an update available. The errors are: * Warning: include_once(/home/rc72flbipaey/public_html/ginkgosociety.org/wp-content/ plugins/hummingbird-performance/core/class-abstract-module.php): failed to open stream: No such file or directory in /home/rc72flbipaey/public_html/ginkgosociety. org/wp-content/advanced-cache.php on line 24 * Warning: include_once(): Failed opening ‘/home/rc72flbipaey/public_html/ginkgosociety. org/wp-content/plugins/hummingbird-performance/core/class-abstract-module.php’ for inclusion (include_path=’.:/opt/alt/php72/usr/share/pear’) in /home/rc72flbipaey/ public_html/ginkgosociety.org/wp-content/advanced-cache.php on line 24 * Warning: include_once(/home/rc72flbipaey/public_html/ginkgosociety.org/wp-content/ plugins/hummingbird-performance/core/modules/class-module-page-cache.php): failed to open stream: No such file or directory in /home/rc72flbipaey/public_html/ginkgosociety. org/wp-content/advanced-cache.php on line 25 * Warning: include_once(): Failed opening ‘/home/rc72flbipaey/public_html/ginkgosociety. org/wp-content/plugins/hummingbird-performance/core/modules/class-module-page- cache.php’ for inclusion (include_path=’.:/opt/alt/php72/usr/share/pear’) in / home/rc72flbipaey/public_html/ginkgosociety.org/wp-content/advanced-cache.php on line 25 * [Anton Vanyukov](https://wordpress.org/support/users/vanyukov/) * (@vanyukov) * [6 years, 6 months ago](https://wordpress.org/support/topic/plugin-error-132/#post-11991327) * Hi [@ysmr](https://wordpress.org/support/users/ysmr/), * Could you please disable/enable page caching in Hummingbird. That should resolve the issue. * Best regards, Anton * [aneezr](https://wordpress.org/support/users/aneezr/) * (@aneezr) * [6 years, 4 months ago](https://wordpress.org/support/topic/plugin-error-132/#post-12162440) * Hi [@vanyukov](https://wordpress.org/support/users/vanyukov/) * I am getting an error on my website, I couldn’t log in to the dashboard to disable the plugin as well as you mentioned above. * Please, can you guide me with the process? * Warning: include_once(/home/customer/www/***.com/public_html/wp-content/plugins/ hummingbird-performance/core/class-abstract-module.php): failed to open stream: No such file or directory in /home/customer/www/***.com/public_html/wp-content/ advanced-cache.php on line 24 * Warning: include_once(): Failed opening ‘/home/customer/www/***.com/public_html/ wp-content/plugins/hummingbird-performance/core/class-abstract-module.php’ for inclusion (include_path=’.:/usr/local/php71/pear’) in /home/customer/www/***. com/public_html/wp-content/advanced-cache.php on line 24 * Warning: include_once(/home/customer/www/***.com/public_html/wp-content/plugins/ hummingbird-performance/core/modules/class-module-page-cache.php): failed to open stream: No such file or directory in /home/customer/www/***.com/public_html/ wp-content/advanced-cache.php on line 25 * Warning: include_once(): Failed opening ‘/home/customer/www/***.com/public_html/ wp-content/plugins/hummingbird-performance/core/modules/class-module-page-cache. php’ for inclusion (include_path=’.:/usr/local/php71/pear’) in /home/customer/ www/***.com/public_html/wp-content/advanced-cache.php on line 25 * Warning: Cannot modify header information – headers already sent by (output started at /home/customer/www/***.com/public_html/wp-content/advanced-cache.php:24) in/ home/customer/www/***.com/public_html/wp-content/plugins/hummingbird-performance/ core/modules/class-page-cache.php on line 1273 * [Pablo Lara H](https://wordpress.org/support/users/pablolarah/) * (@pablolarah) * [6 years, 4 months ago](https://wordpress.org/support/topic/plugin-error-132/#post-12168747) * Hi: I have the same error, both in the backend and frontend: Warning: include_once(/ home/…/class-abstract-module.php): failed to open stream: No such file or directory in /home/…/advanced-cache.php on line 24 * Warning: include_once(): Failed opening ‘…/class-abstract-module.php’ for inclusion( include_path=’.:/usr/local/php71/pear’) in /home/…/advanced-cache.php on line 24 * Warning: include_once(/home/…/class-module-page-cache.php): failed to open stream: No such file or directory in /home/…/advanced-cache.php on line 25 * Warning: include_once(): Failed opening ‘/home/…/class-module-page-cache.php’ for inclusion (include_path=’.:/usr/local/php71/pear’) in /home/…/advanced-cache. php on line 25 * I deactivated and activate the plugin and nothing happens. * Help please. * Thanks, - This reply was modified 6 years, 4 months ago by [Pablo Lara H](https://wordpress.org/support/users/pablolarah/). - This reply was modified 6 years, 4 months ago by [Pablo Lara H](https://wordpress.org/support/users/pablolarah/). * [Pablo Lara H](https://wordpress.org/support/users/pablolarah/) * (@pablolarah) * [6 years, 4 months ago](https://wordpress.org/support/topic/plugin-error-132/#post-12168754) * Hi: * I solved the problem in my website. I just resetted the plugin. Go to: Settings/ Data & Settings/Reset Settings * Also, if you want to delete it, I found an useful article here: [https://mainwp.com/how-to-safely-remove-the-hummingbird-plugin-from-your-child-site/](https://mainwp.com/how-to-safely-remove-the-hummingbird-plugin-from-your-child-site/) - This reply was modified 6 years, 4 months ago by [Pablo Lara H](https://wordpress.org/support/users/pablolarah/). * Plugin Support [Amin – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support2/) * (@wpmudev-support2) * [6 years, 4 months ago](https://wordpress.org/support/topic/plugin-error-132/#post-12175373) * Hello [@aneezr](https://wordpress.org/support/users/aneezr/) , * Sorry to hear about this issue. * You can try disabling plugin using FTP if those errors are preventing you from logging into Dashboard. [https://support.bestwebsoft.com/hc/en-us/articles/204301449-Deactivate-disable-Wordpress-plugin-via-FTP](https://support.bestwebsoft.com/hc/en-us/articles/204301449-Deactivate-disable-Wordpress-plugin-via-FTP) * kind regards, Kasia * [ezradallas](https://wordpress.org/support/users/ezradallas/) * (@ezradallas) * [6 years, 4 months ago](https://wordpress.org/support/topic/plugin-error-132/#post-12217799) * fixed - This reply was modified 6 years, 4 months ago by [ezradallas](https://wordpress.org/support/users/ezradallas/). * [Anton Vanyukov](https://wordpress.org/support/users/vanyukov/) * (@vanyukov) * [6 years, 4 months ago](https://wordpress.org/support/topic/plugin-error-132/#post-12217808) * [@ezradallas](https://wordpress.org/support/users/ezradallas/), please disable/ enable page caching in Hummingbird If you are not able to access wp-admin, remove the line define( ‘WP_CACHE’, true ) from your wp-config.php file. After that disable/enable page caching and everything will start working again. * Best regards, Anton/ * [filipjaz](https://wordpress.org/support/users/filipjaz/) * (@filipjaz) * [6 years, 3 months ago](https://wordpress.org/support/topic/plugin-error-132/#post-12238890) * I’m getting a similar error which shows in the header of my blog AND my WP dashboard. The Hummingbird plugin isn’t showing an update available. The errors are: * Warning: include_once(/wp-content/plugins/hummingbird-performance/core/class- abstract-module.php): failed to open stream: No such file or directory in /wp- content/advanced-cache.php on line 24 * Warning: include_once(): Failed opening ‘/wp-content/plugins/hummingbird-performance/ core/class-abstract-module.php’ for inclusion (include_path=’.:/opt/php73u/lib/ php’) in /wp-content/advanced-cache.php on line 24 * Warning: include_once(/wp-content/plugins/hummingbird-performance/core/modules/ class-module-page-cache.php): failed to open stream: No such file or directory in /wp-content/advanced-cache.php on line 25 * Warning: include_once(): Failed opening ‘/wp-content/plugins/hummingbird-performance/ core/modules/class-module-page-cache.php’ for inclusion (include_path=’.:/opt/ php73u/lib/php’) in /wp-content/advanced-cache.php on line 25 * appeared after the update * [Anton Vanyukov](https://wordpress.org/support/users/vanyukov/) * (@vanyukov) * [6 years, 3 months ago](https://wordpress.org/support/topic/plugin-error-132/#post-12240897) * [@filipjaz](https://wordpress.org/support/users/filipjaz/), * Please follow my advice above. * Best regards, Anton * [djenter](https://wordpress.org/support/users/djenter/) * (@djenter) * [6 years, 2 months ago](https://wordpress.org/support/topic/plugin-error-132/#post-12394959) * Getting same error after update 5.3.2 – funny enough i dont even have the plugin installed anymore… why the hell am i getting this error message when the plugin folder is long gone?? * Plugin Support [Imran – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support9/) * (@wpmudev-support9) * [6 years, 2 months ago](https://wordpress.org/support/topic/plugin-error-132/#post-12395164) * Hello [@djenter](https://wordpress.org/support/users/djenter/) * I hope you are doing well! * Would you please paste in a new thread the exact errors that you are getting? Since the plugin is not installed, the Hummingbird is not affecting your site in any way. * As this issue is resolved for the original author, per WordPress regulations, please create a new thread. * Kind regards, Nastia Viewing 15 replies - 1 through 15 (of 17 total) 1 [2](https://wordpress.org/support/topic/plugin-error-132/page/2/?output_format=md) [→](https://wordpress.org/support/topic/plugin-error-132/page/2/?output_format=md) The topic ‘Plugin 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/) ## Tags * [advanced cache](https://wordpress.org/support/topic-tag/advanced-cache/) * [hummingbird](https://wordpress.org/support/topic-tag/hummingbird/) * [Resetting](https://wordpress.org/support/topic-tag/resetting/) * 17 replies * 10 participants * Last reply from: [djenter](https://wordpress.org/support/users/djenter/) * Last activity: [6 years, 2 months ago](https://wordpress.org/support/topic/plugin-error-132/page/2/#post-12399099) * Status: resolved