Title: Error at PostmanUtils.php line 67
Last modified: August 30, 2016

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# Error at PostmanUtils.php line 67

 *  Resolved [amylavonne](https://wordpress.org/support/users/amylavonne/)
 * (@amylavonne)
 * [10 years, 9 months ago](https://wordpress.org/support/topic/error-at-postmanutilsphp-line-67/)
 * New error today pasted below. I can consistently make it happen when I use the
   Admin Columns plugin to edit columns for Pages posttype. The error appears when
   I save my new settings in Admin Columns. I do NOT get the error when I edit columns
   for Posts posttype.
 * The error is new, it wasn’t happening yesterday. I have had Postman installed
   for weeks without issue. Same for MemberMouse. I didn’t add any new plugins in
   the last 24 hours.
 * parameter 1 to be string, array given in /home1/litigau1/public_html/litigationsupportgurublueprint/
   wp-content/plugins/postman-smtp/Postman/PostmanUtils.php on line 67
 * Warning: substr() expects parameter 1 to be string, array given in /home1/litigau1/
   public_html/litigationsupportgurublueprint/wp-content/plugins/postman-smtp/Postman/
   PostmanUtils.php on line 67
 * Warning: Cannot modify header information – headers already sent by (output started
   at /home1/litigau1/public_html/litigationsupportgurublueprint/wp-content/plugins/
   postman-smtp/Postman/PostmanUtils.php:67) in /home1/litigau1/public_html/litigationsupportgurublueprint/
   wp-content/plugins/membermouse/includes/init.php(234) : eval()’d code on line
   107
 * Warning: Cannot modify header information – headers already sent by (output started
   at /home1/litigau1/public_html/litigationsupportgurublueprint/wp-content/plugins/
   postman-smtp/Postman/PostmanUtils.php:67) in /home1/litigau1/public_html/litigationsupportgurublueprint/
   wp-content/plugins/membermouse/includes/init.php(234) : eval()’d code on line
   107
 * Warning: substr() expects parameter 1 to be string, array given in /home1/litigau1/
   public_html/litigationsupportgurublueprint/wp-content/plugins/postman-smtp/Postman/
   PostmanUtils.php on line 67
 * [https://wordpress.org/plugins/postman-smtp/](https://wordpress.org/plugins/postman-smtp/)

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

 *  Plugin Author [Jason Hendriks](https://wordpress.org/support/users/jasonhendriks/)
 * (@jasonhendriks)
 * [10 years, 9 months ago](https://wordpress.org/support/topic/error-at-postmanutilsphp-line-67/#post-6437751)
 * PostmanUtils.php on line 67 parses the global $_REQUEST variable to retrieve 
   the current page name. Normally the variable returned is a String.
 *     ```
       substr ( $_REQUEST ['page'], 0, strlen ( 'postman' ) )
       ```
   
 * From your output, it appears that the _Admin Columns_ plugin is modifying the
   $_REQUEST[‘page’] variable to be an Array instead of a String, hence the warning(
   this is only a warning, not an error).
 * I’ll install the plugin and see if I can come up with an alternate method of 
   querying the current page that is compatible with _Admin Columns_.
 *  Thread Starter [amylavonne](https://wordpress.org/support/users/amylavonne/)
 * (@amylavonne)
 * [10 years, 9 months ago](https://wordpress.org/support/topic/error-at-postmanutilsphp-line-67/#post-6437759)
 * Thanks so much for the quick reply. A warning sounds better than an error. Ha!
   Since so many people use Admin Columns, it will help to come up with a fix if
   you can. Thanks!
 *  Plugin Author [Jason Hendriks](https://wordpress.org/support/users/jasonhendriks/)
 * (@jasonhendriks)
 * [10 years, 8 months ago](https://wordpress.org/support/topic/error-at-postmanutilsphp-line-67/#post-6438028)
 * The Admin Columns plugin is modifying the WordPress special variable ‘page’. 
   They shouldn’t do that. Postman expects it to be there.
 * [Bug the author to get it fixed](https://wordpress.org/support/topic/please-dont-modify-the-page-httprequest-var?replies=1#post-7441340).
 * Cheers!

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

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## Tags

 * [admin columns](https://wordpress.org/support/topic-tag/admin-columns/)

 * 3 replies
 * 2 participants
 * Last reply from: [Jason Hendriks](https://wordpress.org/support/users/jasonhendriks/)
 * Last activity: [10 years, 8 months ago](https://wordpress.org/support/topic/error-at-postmanutilsphp-line-67/#post-6438028)
 * Status: resolved