Title: Plugin Activation Error
Last modified: September 28, 2018

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# Plugin Activation Error

 *  [matanzari](https://wordpress.org/support/users/matanzari/)
 * (@matanzari)
 * [7 years, 8 months ago](https://wordpress.org/support/topic/plugin-activation-error-26/)
 * Hey,
    After activating the plugin I get a warning “This plugin created unexpected
   output characters during activation. if ‘headers already sent’ message appears…”.
 * WordPress version: 4.9.7
    Installed plugins:
 * | advanced-custom-fields-pro | active | available | 5.6.10 |
    | easy-social-share-
   buttons3 | active | none | 5.6 | | whitelist | active | none | 3.5 | | instagram-
   feed | active | none | 1.10.1 | | tinymce-advanced | active | none | 4.7.11 |
   | wordpress-social-login | active | none | 2.3.3 | | wp-user-avatars | active
   | none | 1.4.0 | | wordpress-seo | active | available | 7.8 | | bedrock-autoloader
   | must-use | none | 1.0.0 | | disallow-indexing | must-use | none | 1.0.0 | |
   register-theme-directory | must-use | none | 1.0.0 |
 * I see that there’s been a long times since this plugin was updated.
    Is it still
   maintained?

The topic ‘Plugin Activation Error’ is closed to new replies.

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 * 0 replies
 * 1 participant
 * Last reply from: [matanzari](https://wordpress.org/support/users/matanzari/)
 * Last activity: [7 years, 8 months ago](https://wordpress.org/support/topic/plugin-activation-error-26/)
 * Status: not resolved