Title: PHP undefined property warning
Last modified: July 20, 2026

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# PHP undefined property warning

 *  [arypneta](https://wordpress.org/support/users/arypneta/)
 * (@arypneta)
 * [2 weeks, 6 days ago](https://wordpress.org/support/topic/php-undefined-property-warning/)
 * Relatively recently we’ve started to get PHP warnings related to Co-Authors.
 * PHP Warning: Undefined property: stdClass::$user_email in /plugins/co-authors-
   plus/php/class-coauthors-plus.php on line 689.
 * We’re on version 4.1.1. I don’t know exactly when it started showing up, but 
   I think it was fairly recently, since I don’t recall seeing it before. Just wanted
   to let you know, so you might be able to clean that up in a future release. I
   don’t think it’s affecting any functionality.
 * Thanks!

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 * ![](https://ps.w.org/co-authors-plus/assets/icon-256x256.png?rev=2945095)
 * [Co-Authors Plus](https://wordpress.org/plugins/co-authors-plus/)
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 * 0 replies
 * 1 participant
 * Last reply from: [arypneta](https://wordpress.org/support/users/arypneta/)
 * Last activity: [2 weeks, 6 days ago](https://wordpress.org/support/topic/php-undefined-property-warning/)
 * Status: not resolved