Title: Plugin Error
Last modified: March 14, 2022

---

# Plugin Error

 *  Resolved [ltdsdev](https://wordpress.org/support/users/ltdsdev/)
 * (@ltdsdev)
 * [4 years, 2 months ago](https://wordpress.org/support/topic/plugin-error-191/)
 * Notice: Undefined offset: 0 in /home3/*******/public_html/wp-includes/plugin.
   php on line 957
 * Notice: Undefined offset: 0 in /home3/*******/public_html/wp-includes/plugin.
   php on line 960
 * Warning: Cannot modify header information – headers already sent by (output started
   at /home3/*******/public_html/wp-includes/plugin.php:957) in /home3/*******/public_html/
   wp-includes/functions.php on line 6821
 * Warning: Cannot modify header information – headers already sent by (output started
   at /home3/*******/public_html/wp-includes/plugin.php:957) in /home3/*******/public_html/
   wp-admin/includes/misc.php on line 1310
 * Warning: Cannot modify header information – headers already sent by (output started
   at /home3/*******/public_html/wp-includes/plugin.php:957) in /home3/*******/public_html/
   wp-includes/pluggable.php on line 1355
 * Warning: Cannot modify header information – headers already sent by (output started
   at /home3/*******/public_html/wp-includes/plugin.php:957) in /home3/*******/public_html/
   wp-includes/pluggable.php on line 1358
 * I have tried this ‘fix’ seen in another thread but it doesnt work for my site.
   I have removed all themes when trying the fix
 *     ```
       Again, it is something specific (non-standard) to your installation.You can try Edit /wp-content/plugins/woo-instant-notifications/admin/class-wcnotifications-instance.php
   
       and delete the line that contains :
   
       $this->placeholders[‘{woocommerce_email_order_meta}’] = $this->woocommerce_email_order_meta();
       ```
   

Viewing 7 replies - 1 through 7 (of 7 total)

 *  Plugin Author [Georgi Bakalski](https://wordpress.org/support/users/irdroid/)
 * (@irdroid)
 * [4 years, 2 months ago](https://wordpress.org/support/topic/plugin-error-191/#post-15458434)
 * According to this something has modified your php plugin file adding empty lines
   before or after the begining of the php plugin file.
 * [https://www.hostinger.com/tutorials/cannot-modify-header-information](https://www.hostinger.com/tutorials/cannot-modify-header-information)
 * Removing the empty lines should solve the issue for you.
    -  This reply was modified 4 years, 2 months ago by [Georgi Bakalski](https://wordpress.org/support/users/irdroid/).
 *  Thread Starter [ltdsdev](https://wordpress.org/support/users/ltdsdev/)
 * (@ltdsdev)
 * [4 years, 2 months ago](https://wordpress.org/support/topic/plugin-error-191/#post-15458645)
 * that suggestion is outside my understanding. Is there another method i can go
   about or step by step instructions to follow
 *  Plugin Author [Georgi Bakalski](https://wordpress.org/support/users/irdroid/)
 * (@irdroid)
 * [4 years, 2 months ago](https://wordpress.org/support/topic/plugin-error-191/#post-15458691)
 * What’s the version of the plugin that you are using?
 *  Thread Starter [ltdsdev](https://wordpress.org/support/users/ltdsdev/)
 * (@ltdsdev)
 * [4 years, 2 months ago](https://wordpress.org/support/topic/plugin-error-191/#post-15458696)
 * version 1.4
 *  Thread Starter [ltdsdev](https://wordpress.org/support/users/ltdsdev/)
 * (@ltdsdev)
 * [4 years, 2 months ago](https://wordpress.org/support/topic/plugin-error-191/#post-15461674)
 * after going through all plugins i have identified that Woo instant notification
   is in conflict with Bluehost Website Builder.
 * Any suggestions?
 *  Plugin Author [Georgi Bakalski](https://wordpress.org/support/users/irdroid/)
 * (@irdroid)
 * [4 years, 2 months ago](https://wordpress.org/support/topic/plugin-error-191/#post-15463498)
 * If there is a conflict with the Bluehost sitebuilder, then you may have to identify
   what the problem is by enabling debugging and wordpress logging. Or use different
   site builder
 *  Plugin Author [Georgi Bakalski](https://wordpress.org/support/users/irdroid/)
 * (@irdroid)
 * [4 years, 2 months ago](https://wordpress.org/support/topic/plugin-error-191/#post-15490400)
 * look at this post for resolution
 * [https://wordpress.org/support/topic/php-8-0-checkout-woo-error/](https://wordpress.org/support/topic/php-8-0-checkout-woo-error/)

Viewing 7 replies - 1 through 7 (of 7 total)

The topic ‘Plugin Error’ is closed to new replies.

 * ![](https://s.w.org/plugins/geopattern-icon/woo-instant-notifications_8a7739.
   svg)
 * [Woo Instant Notifications](https://wordpress.org/plugins/woo-instant-notifications/)
 * [Support Threads](https://wordpress.org/support/plugin/woo-instant-notifications/)
 * [Active Topics](https://wordpress.org/support/plugin/woo-instant-notifications/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/woo-instant-notifications/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/woo-instant-notifications/reviews/)

 * 7 replies
 * 2 participants
 * Last reply from: [Georgi Bakalski](https://wordpress.org/support/users/irdroid/)
 * Last activity: [4 years, 2 months ago](https://wordpress.org/support/topic/plugin-error-191/#post-15490400)
 * Status: resolved