Title: WP_DEBUG message line 174
Last modified: February 6, 2021

---

# WP_DEBUG message line 174

 *  [Clifford Paulick](https://wordpress.org/support/users/cliffpaulick/)
 * (@cliffpaulick)
 * [5 years, 4 months ago](https://wordpress.org/support/topic/wp_debug-message-line-174/)
 * I’m unsure how this triggered, but it did:
 * > PHP Notice: Undefined index: HTTP_USER_AGENT in /wp-content/plugins/zapier/
   > zapier.php on line 174
 * Please improve the code to avoid this from happening again in the future.

The topic ‘WP_DEBUG message line 174’ is closed to new replies.

 * ![](https://ps.w.org/zapier/assets/icon.svg?rev=3043272)
 * [Zapier for WordPress](https://wordpress.org/plugins/zapier/)
 * [Support Threads](https://wordpress.org/support/plugin/zapier/)
 * [Active Topics](https://wordpress.org/support/plugin/zapier/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/zapier/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/zapier/reviews/)

 * 0 replies
 * 1 participant
 * Last reply from: [Clifford Paulick](https://wordpress.org/support/users/cliffpaulick/)
 * Last activity: [5 years, 4 months ago](https://wordpress.org/support/topic/wp_debug-message-line-174/)
 * Status: not resolved