Title: PHP-error upon activation
Last modified: May 5, 2022

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# PHP-error upon activation

 *  [Guido](https://wordpress.org/support/users/guido07111975/)
 * (@guido07111975)
 * [4 years ago](https://wordpress.org/support/topic/php-error-upon-activation/)
 * Hi,
 * Upon activation the plugin somehow activates an error in dashboard, because `
   php-error` is added to the `body` class. Could not find the error itself.. But
   you will notice the sidebar is pushed downwards.
 * Guido

Viewing 1 replies (of 1 total)

 *  Thread Starter [Guido](https://wordpress.org/support/users/guido07111975/)
 * (@guido07111975)
 * [4 years ago](https://wordpress.org/support/topic/php-error-upon-activation/#post-15625007)
 * Hi again,
 * The Site Health page also has a critical error:
 * _An active PHP session was detected
    A PHP session was created by a session\_start()
   function call. This interferes with REST API and loopback requests. The session
   should be closed by session\_write\_close() before making any HTTP requests.
 * Guido

Viewing 1 replies (of 1 total)

The topic ‘PHP-error upon activation’ is closed to new replies.

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 * 1 reply
 * 1 participant
 * Last reply from: [Guido](https://wordpress.org/support/users/guido07111975/)
 * Last activity: [4 years ago](https://wordpress.org/support/topic/php-error-upon-activation/#post-15625007)
 * Status: not resolved