Title: Many errors
Last modified: August 7, 2024

---

# Many errors

 *  Resolved [achimfalk](https://wordpress.org/support/users/achimfalk/)
 * (@achimfalk)
 * [1 year, 9 months ago](https://wordpress.org/support/topic/many-errors-24/)
 * Hi,
 * I suddenly have a lot of errors with wpmobile.app like: 
   “Deprecated: strpos():
   Passing null to parameter #1 ($haystack) of type string is deprecated… in functions.
   php” and some other php files of wordpress. So I have deactivated all plugins
   and started wpmobile.app at first… the errors came back immediately. All errors
   are just gone if I only deactivate wpmobile.app. For some months wpmobile.app
   ran perfectly, but now not. Any ideas?

Viewing 4 replies - 1 through 4 (of 4 total)

 *  Thread Starter [achimfalk](https://wordpress.org/support/users/achimfalk/)
 * (@achimfalk)
 * [1 year, 9 months ago](https://wordpress.org/support/topic/many-errors-24/#post-17937691)
 * I think I have found the problem. wpmobile.app runs great on PHP 8.0, but if 
   you set your website to PHP 8.1 or higher the trouble begins.
 *  Plugin Author [Amauri](https://wordpress.org/support/users/amauric/)
 * (@amauric)
 * [1 year, 9 months ago](https://wordpress.org/support/topic/many-errors-24/#post-17938183)
 * Hi
 * 
   Correct, on PHP 8.1 there is deprecated error, I’ll fix this.
 * You should not see display php errors on the production website, deprecated are
   notices and didnt break the app functionality.
 *  Thread Starter [achimfalk](https://wordpress.org/support/users/achimfalk/)
 * (@achimfalk)
 * [1 year, 9 months ago](https://wordpress.org/support/topic/many-errors-24/#post-17939041)
 * That is great! 🙂 Thank you for your fast reply. 🙂
 *  [rubenlandman](https://wordpress.org/support/users/rubenlandman/)
 * (@rubenlandman)
 * [1 year, 9 months ago](https://wordpress.org/support/topic/many-errors-24/#post-17952715)
 * Hi,
   Today, I installed this plugin as well (version 11.49). After activating 
   it, I get these errors:
 * 
   **Deprecated**: strpos(): Passing null to parameter #1 ($haystack) of type string
   is deprecated in **/var/www/vhosts/xon.nu/httpdocs/wp-includes/functions.php**
   on line **7300****Deprecated**: str_replace(): Passing null to parameter #3 (
   $subject) of type array|string is deprecated in **/var/www/vhosts/xon.nu/httpdocs/
   wp-includes/functions.php** on line **2189****Warning**: Cannot modify header
   information – headers already sent by (output started at /var/www/vhosts/xon.
   nu/httpdocs/wp-includes/functions.php:2189) in **/var/www/vhosts/xon.nu/httpdocs/
   wp-admin/includes/misc.php** on line **1438****Warning**: Cannot modify header
   information – headers already sent by (output started at /var/www/vhosts/xon.
   nu/httpdocs/wp-includes/functions.php:2189) in **/var/www/vhosts/xon.nu/httpdocs/
   wp-includes/functions.php** on line **7108****Warning**: Cannot modify header
   information – headers already sent by (output started at /var/www/vhosts/xon.
   nu/httpdocs/wp-includes/functions.php:2189) in **/var/www/vhosts/xon.nu/httpdocs/
   wp-admin/admin-header.php** on line **9**
 * When I de-activate the plugin, all the errors are gone. I am running on PHP 8.2.22.

Viewing 4 replies - 1 through 4 (of 4 total)

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

 * ![](https://ps.w.org/wpappninja/assets/icon-256x256.png?rev=2215187)
 * [WPMobile.App](https://wordpress.org/plugins/wpappninja/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/wpappninja/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/wpappninja/)
 * [Active Topics](https://wordpress.org/support/plugin/wpappninja/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/wpappninja/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/wpappninja/reviews/)

## Tags

 * [deprecated](https://wordpress.org/support/topic-tag/deprecated/)
 * [plugin](https://wordpress.org/support/topic-tag/plugin/)

 * 4 replies
 * 3 participants
 * Last reply from: [rubenlandman](https://wordpress.org/support/users/rubenlandman/)
 * Last activity: [1 year, 9 months ago](https://wordpress.org/support/topic/many-errors-24/#post-17952715)
 * Status: resolved