Title: PHP errors with WP 5.3
Last modified: November 13, 2019

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# PHP errors with WP 5.3

 *  Resolved [eltarny](https://wordpress.org/support/users/eltarny/)
 * (@eltarny)
 * [6 years, 7 months ago](https://wordpress.org/support/topic/php-errors-with-wp-5-3/)
 * Hello,
 * we just upgraded our site to WP 5.3 and we had the following PHP errors in the
   backend.
    The first error also appears in the front end.
 * Deprecated: Non-static method Smackcoders\FCSV\SmackCSV::show_admin_menus() should
   not be called statically in /home/racedire/tst.racedirectorshq.com/wp-includes/
   class-wp-hook.php on line 288
 * Deprecated: Non-static method Smackcoders\FCSV\SmackCSV::testing_function() should
   not be called statically in /home/racedire/tst.racedirectorshq.com/wp-includes/
   class-wp-hook.php on line 288
 * Warning: Cannot modify header information – headers already sent by (output started
   at /home/racedire/tst.racedirectorshq.com/wp-includes/class-wp-hook.php:288) 
   in /home/racedire/tst.racedirectorshq.com/wp-includes/functions.php on line 5946
 * Warning: Cannot modify header information – headers already sent by (output started
   at /home/racedire/tst.racedirectorshq.com/wp-includes/class-wp-hook.php:288) 
   in /home/racedire/tst.racedirectorshq.com/wp-admin/includes/misc.php on line 
   1252
 * Warning: Cannot modify header information – headers already sent by (output started
   at /home/racedire/tst.racedirectorshq.com/wp-includes/class-wp-hook.php:288) 
   in /home/racedire/tst.racedirectorshq.com/wp-admin/admin-header.php on line 9
 * After deactivating all our plugins one by one, we found out that these errors
   disappear when we deactivate WP Stripe Checkout Plugin and reappear after we 
   re-activate it.
 * Thank you,
    Elias

Viewing 2 replies - 1 through 2 (of 2 total)

 *  Plugin Author [Noor Alam](https://wordpress.org/support/users/naa986/)
 * (@naa986)
 * [6 years, 6 months ago](https://wordpress.org/support/topic/php-errors-with-wp-5-3/#post-12145738)
 * [@eltarny](https://wordpress.org/support/users/eltarny/), I have just released
   an update to fix some warning notices.
 *  Thread Starter [eltarny](https://wordpress.org/support/users/eltarny/)
 * (@eltarny)
 * [6 years, 6 months ago](https://wordpress.org/support/topic/php-errors-with-wp-5-3/#post-12157518)
 * Hi, Noor.
 * Thank you so much for this!
    The problem is resolved.
 * Best,
    Elias

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘PHP errors with WP 5.3’ is closed to new replies.

 * ![](https://ps.w.org/wp-stripe-checkout/assets/icon-256x256.png?rev=2776936)
 * [WP Stripe Checkout](https://wordpress.org/plugins/wp-stripe-checkout/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/wp-stripe-checkout/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/wp-stripe-checkout/)
 * [Active Topics](https://wordpress.org/support/plugin/wp-stripe-checkout/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/wp-stripe-checkout/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/wp-stripe-checkout/reviews/)

 * 2 replies
 * 2 participants
 * Last reply from: [eltarny](https://wordpress.org/support/users/eltarny/)
 * Last activity: [6 years, 6 months ago](https://wordpress.org/support/topic/php-errors-with-wp-5-3/#post-12157518)
 * Status: resolved