Title: Getting Header Log Error on api.php
Last modified: April 17, 2021

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# Getting Header Log Error on api.php

 *  Resolved [Jeff Lambert](https://wordpress.org/support/users/lambje/)
 * (@lambje)
 * [4 years, 11 months ago](https://wordpress.org/support/topic/getting-header-log-error-on-api-php/)
 * Hello,
 * Background: I update the plugin around the middle of each month.
 * Starting on Feb 17 I started seeing this error in the error log file and it happens
   most days and often more than once in a day. This has been consistently happening
   since Feb 17 through today. I did do an update today but didn’t see anything 
   in the change log that would make me think something has been done to fix this,
   so, just making you aware of it.
 * [17-Apr-2021 15:40:55 UTC] PHP Warning: Cannot modify header information – headers
   already sent by (output started at /home/removed/public_html/wp-includes/embed.
   php:762) in /home/removed/public_html/wp-content/plugins/all-in-one-seo-pack/
   app/Common/Api/Api.php on line 182

Viewing 3 replies - 1 through 3 (of 3 total)

 *  Plugin Author [arnaudbroes](https://wordpress.org/support/users/arnaudbroes/)
 * (@arnaudbroes)
 * [4 years, 11 months ago](https://wordpress.org/support/topic/getting-header-log-error-on-api-php/#post-14332938)
 * [@lambje](https://wordpress.org/support/users/lambje/) that should be fixed in
   the next update, 4.1.1. This is a conflict that happens when both our and another
   plugin try to set a specific HTTP header.
 *  Thread Starter [Jeff Lambert](https://wordpress.org/support/users/lambje/)
 * (@lambje)
 * [4 years, 10 months ago](https://wordpress.org/support/topic/getting-header-log-error-on-api-php/#post-14445396)
 * Thanks for your response. I just updated the site today during my monthly maintenance.
   I noticed that the change log states that 4.1.1 was released on May 12, but the
   most recent version that was available, and which I upgraded to, is 4.1.0.2. 
   Any idea when v4.1.1 will be pushed out or is the fix in the version I just installed?
 *  Plugin Author [arnaudbroes](https://wordpress.org/support/users/arnaudbroes/)
 * (@arnaudbroes)
 * [4 years, 10 months ago](https://wordpress.org/support/topic/getting-header-log-error-on-api-php/#post-14446418)
 * [@lambje](https://wordpress.org/support/users/lambje/) the 4.1.1 update for the
   Pro version was released last week. We’re going to roll out the 4.1.1 Lite update
   this week, most likely tomorrow.

Viewing 3 replies - 1 through 3 (of 3 total)

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 * 3 replies
 * 2 participants
 * Last reply from: [arnaudbroes](https://wordpress.org/support/users/arnaudbroes/)
 * Last activity: [4 years, 10 months ago](https://wordpress.org/support/topic/getting-header-log-error-on-api-php/#post-14446418)
 * Status: resolved