Title: substr() errors
Last modified: June 1, 2020

---

# substr() errors

 *  [Sea Jay](https://wordpress.org/support/users/jcollier/)
 * (@jcollier)
 * [5 years, 11 months ago](https://wordpress.org/support/topic/substr-errors/)
 * FYI. We received this error in the backend today. Core and plugin are current
   versions.
 * Warning: substr() expects parameter 1 to be string, array given in /home/[snip]/
   public_html/[snip]/wp-content/plugins/post-smtp/Postman/PostmanUtils.php on line
   71
 * Warning: substr() expects parameter 1 to be string, array given in /home/[snip]/
   public_html/[snip]/wp-content/plugins/post-smtp/Postman/PostmanUtils.php on line
   71
 * Warning: Cannot modify header information – headers already sent by (output started
   at /home/[snip]/public_html/[snip]/wp-content/plugins/post-smtp/Postman/PostmanUtils.
   php:71) in /home/[snip]/public_html/[snip]/wp-includes/functions.php on line 
   6221
    -  This topic was modified 5 years, 11 months ago by [Sea Jay](https://wordpress.org/support/users/jcollier/).

The topic ‘substr() errors’ is closed to new replies.

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 * 0 replies
 * 1 participant
 * Last reply from: [Sea Jay](https://wordpress.org/support/users/jcollier/)
 * Last activity: [5 years, 11 months ago](https://wordpress.org/support/topic/substr-errors/)
 * Status: not resolved