Title: Plugin error
Last modified: September 5, 2019

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# 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 2 replies - 16 through 17 (of 17 total)

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 *  [Anton Vanyukov](https://wordpress.org/support/users/vanyukov/)
 * (@vanyukov)
 * [6 years, 2 months ago](https://wordpress.org/support/topic/plugin-error-132/page/2/#post-12395168)
 * [@djenter](https://wordpress.org/support/users/djenter/),
 * If you’ve removed the plugin via FTP, you probably didn’t remove the advanced-
   cache.php and the define from wp-config.php
 * Best regards,
    Anton
 *  [djenter](https://wordpress.org/support/users/djenter/)
 * (@djenter)
 * [6 years, 2 months ago](https://wordpress.org/support/topic/plugin-error-132/page/2/#post-12399099)
 * [@vanyukov](https://wordpress.org/support/users/vanyukov/)
 * Thanks, it actually was the advanced-cache.php that was the culprit. However,
   the plugin originally was only ever installed and deinstalled through the plugin
   backend in wordpress.
 * Thanks at all for the quick help!
 * cheers

Viewing 2 replies - 16 through 17 (of 17 total)

[←](https://wordpress.org/support/topic/plugin-error-132/?output_format=md) [1](https://wordpress.org/support/topic/plugin-error-132/?output_format=md)
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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/)
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 * [Support Threads](https://wordpress.org/support/plugin/hummingbird-performance/)
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## 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