Title: PHP errors
Last modified: January 24, 2022

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# PHP errors

 *  [Marko Hoven](https://wordpress.org/support/users/markohoven/)
 * (@markohoven)
 * [4 years, 4 months ago](https://wordpress.org/support/topic/php-errors-263/)
 * I keep getting the following errors/warnings:
 * Notice: Undefined index: HTTP_USER_AGENT in /public_html/wp-content/plugins/link-
   log/inc/class-link-log.php on line 497
 * Warning: Header may not contain more than a single header, new line detected 
   in /public_html/wp-content/plugins/link-log/inc/class-link-log.php on line 523
 * Warning: Header may not contain NUL bytes in /public_html/wp-content/plugins/
   link-log/inc/class-link-log.php on line 523
 * Please fix with an update.
    Thank you!

The topic ‘PHP errors’ is closed to new replies.

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## Tags

 * [errors](https://wordpress.org/support/topic-tag/errors/)
 * [php](https://wordpress.org/support/topic-tag/php/)

 * 0 replies
 * 1 participant
 * Last reply from: [Marko Hoven](https://wordpress.org/support/users/markohoven/)
 * Last activity: [4 years, 4 months ago](https://wordpress.org/support/topic/php-errors-263/)
 * Status: not resolved