Title: install errors on 6.17.5
Last modified: September 23, 2026

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# install errors on 6.17.5

 *  Resolved [olimax](https://wordpress.org/support/users/olimax/)
 * (@olimax)
 * [3 weeks, 1 day ago](https://wordpress.org/support/topic/install-errors-on-6-17-5/)
 * Getting these errors on fresh install of 6.17.5
 * WP 7.13. 
   PHP 8.3WP default themeTurned off all non essential plugsPlease advise
 *     ```wp-block-code
       Warning: include(/home/[SNIP]/user/htdocs/sid/wp-content/plugins/the-events-calendar/common/vendor/vendor-prefixed/composer/../stellarwp/installer/src/Installer/Button.php): Failed to open stream: No such file or directory in /home/[SNIP]/user/htdocs/sid/wp-content/plugins/the-events-calendar/common/vendor/vendor-prefixed/composer/ClassLoader.php on line 576Warning: include(/home/[SNIP]/user/htdocs/sid/wp-content/plugins/the-events-calendar/common/vendor/vendor-prefixed/composer/../stellarwp/installer/src/Installer/Button.php): Failed to open stream: No such file or directory in /home/[SNIP]/user/htdocs/sid/wp-content/plugins/the-events-calendar/common/vendor/vendor-prefixed/composer/ClassLoader.php on line 576Warning: include(): Failed opening '/home/[SNIP]/user/htdocs/sid/wp-content/plugins/the-events-calendar/common/vendor/vendor-prefixed/composer/../stellarwp/installer/src/Installer/Button.php' for inclusion (include_path='.:/usr/share/pear') in /home/[SNIP]/user/htdocs/sid/wp-content/plugins/the-events-calendar/common/vendor/vendor-prefixed/composer/ClassLoader.php on line 576Fatal error: Uncaught Error: Class "TEC\Common\StellarWP\Installer\Button" not found in /home/[SNIP]/user/htdocs/sid/wp-content/plugins/the-events-calendar/common/vendor/vendor-prefixed/stellarwp/installer/src/Installer/Handler/Plugin.php:184 Stack trace: #0 /home/[SNIP]/user/htdocs/sid/wp-content/plugins/the-events-calendar/common/vendor/vendor-prefixed/stellarwp/installer/src/Installer/Installer.php(347): TEC\Common\StellarWP\Installer\Handler\Plugin->get_button() #1 /home/[SNIP]/user/htdocs/sid/wp-content/plugins/the-events-calendar/src/admin-views/notices/install-event-tickets.php(36): TEC\Common\StellarWP\Installer\Installer->render_plugin_button('event-tickets', 'install', 'Install Event T...', 'https://asurrog...') #2 /home/[SNIP]/user/htdocs/sid/wp-content/plugins/the-events-calendar/common/src/Tribe/Template.php(1069): include('/home/linweb43/...') #3 /home/[SNIP]/user/htdocs/sid/wp-content/plugins/the-events-calendar/common/src/Tribe/Template.php(919): Tribe__Template->template_safe_include(NULL) #4 /home/[SNIP]/user/htdocs/sid/wp-content/plugins/the-events-calendar/src/Tribe/Admin/Notice/Install_Event_Tickets.php(269): Tribe__Template->template(Array, Array, false) #5 /home/[SNIP]/user/htdocs/sid/wp-content/plugins/the-events-calendar/common/src/Tribe/Admin/Notices.php(224): Tribe\Events\Admin\Notice\Install_Event_Tickets->notice_install(Object(stdClass)) #6 /home/[SNIP]/user/htdocs/sid/wp-includes/class-wp-hook.php(353): Tribe__Admin__Notices->__call('render_event-ti...', Array) #7 /home/[SNIP]/user/htdocs/sid/wp-includes/class-wp-hook.php(377): WP_Hook->apply_filters(false, Array) #8 /home/[SNIP]/user/htdocs/sid/wp-includes/plugin.php(523): WP_Hook->do_action(Array) #9 /home/[SNIP]/user/htdocs/sid/wp-admin/admin-header.php(313): do_action('admin_notices') #10 /home/[SNIP]/user/htdocs/sid/wp-admin/edit.php(411): require_once('/home/linweb43/...') #11 {main} thrown in /home/[SNIP]/user/htdocs/sid/wp-content/plugins/the-events-calendar/common/vendor/vendor-prefixed/stellarwp/installer/src/Installer/Handler/Plugin.php on line 184
       ```
   

Viewing 6 replies - 1 through 6 (of 6 total)

 *  Thread Starter [olimax](https://wordpress.org/support/users/olimax/)
 * (@olimax)
 * [3 weeks, 1 day ago](https://wordpress.org/support/topic/install-errors-on-6-17-5/#post-19027206)
 * Not sure why but it seems to have clamed down a bit. Now I just get this like
   x 3
 *     ```wp-block-code
       Warning: include(/home/linweb43/a/asurrogateband.com/user/htdocs/sid/wp-content/plugins/the-events-calendar/common/vendor/vendor-prefixed/composer/../stellarwp/installer/src/Installer/Button.php): Failed to open stream: No such file or directory in /home/linweb43/a/asurrogateband.com/user/htdocs/sid/wp-content/plugins/the-events-calendar/common/vendor/vendor-prefixed/composer/ClassLoader.php on line 576
       ```
   
 *  Plugin Support [Darian](https://wordpress.org/support/users/d0153/)
 * (@d0153)
 * [3 weeks ago](https://wordpress.org/support/topic/install-errors-on-6-17-5/#post-19027890)
 * Hi [@olimax](https://wordpress.org/support/users/olimax/),
 * Thanks for the details. The warning means one plugin file is missing from your
   server:
 * `the-events-calendar/common/vendor/vendor-prefixed/stellarwp/installer/src/Installer/
   Button.php`
 * I checked the official 6.17.5 package on WordPress.org, and that file is included.
   So either something went wrong during installation, or the file was removed afterwards.
   The Events Calendar only uses it to render an “Install” button, such as the one
   in the “Install Event Tickets” notice, which is why the error appears on some
   admin screens and not others.
 * Could you try a clean reinstall?
    1. Take a backup first.
    2. Go to **Plugins**, deactivate The Events Calendar, and delete it. Your events
       and settings live in the database, so nothing will be lost.
    3. Go to **Plugins → Add New**, search for The Events Calendar, then install and
       activate it.
    4. Using your host’s File Manager or FTP, confirm that the `Button.php` file above
       now exists.
 * If it goes missing again after a fresh install, your host’s security or malware
   scanner may be removing it. In that case, ask your host to check their quarantine
   logs for that file and restore it.
 * Let me know how it goes.
 *  Thread Starter [olimax](https://wordpress.org/support/users/olimax/)
 * (@olimax)
 * [3 weeks ago](https://wordpress.org/support/topic/install-errors-on-6-17-5/#post-19027929)
 * Thank you so much for your prompt reply. 
   That fixed it. I though it was something
   more complicated. Odd, I had done a clean install. Very much appreciated.
 *  Plugin Support [Darian](https://wordpress.org/support/users/d0153/)
 * (@d0153)
 * [2 weeks, 6 days ago](https://wordpress.org/support/topic/install-errors-on-6-17-5/#post-19028885)
 * Hi [@olimax](https://wordpress.org/support/users/olimax/),
 * Thanks for the update, and I’m glad that’s sorted out!
 * If you have a minute, we’d really appreciate a review. It helps other users find
   the plugin and know what to expect:
 * [https://wordpress.org/support/plugin/the-events-calendar/reviews/](https://wordpress.org/support/plugin/the-events-calendar/reviews/)
 * And if anything else comes up, just open a new thread and we’ll be happy to help.
 *  Thread Starter [olimax](https://wordpress.org/support/users/olimax/)
 * (@olimax)
 * [2 weeks, 5 days ago](https://wordpress.org/support/topic/install-errors-on-6-17-5/#post-19029807)
 * Done
   I could not recommend this more highly. Very much appreciated. Keep up the
   good workMany thanks.
 *  Plugin Support [Darian](https://wordpress.org/support/users/d0153/)
 * (@d0153)
 * [2 weeks, 3 days ago](https://wordpress.org/support/topic/install-errors-on-6-17-5/#post-19031020)
 * Hi [@olimax](https://wordpress.org/support/users/olimax/)
 * Thank you so much for the wonderful review! I’ll go ahead and mark this thread
   as resolved.
 * If anything else comes up, feel free to reach out anytime.

Viewing 6 replies - 1 through 6 (of 6 total)

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 * ![](https://ps.w.org/the-events-calendar/assets/icon-256x256.gif?rev=2516440)
 * [The Events Calendar](https://wordpress.org/plugins/the-events-calendar/)
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 * 6 replies
 * 2 participants
 * Last reply from: [Darian](https://wordpress.org/support/users/d0153/)
 * Last activity: [2 weeks, 3 days ago](https://wordpress.org/support/topic/install-errors-on-6-17-5/#post-19031020)
 * Status: resolved