Title: Fatal error PHP
Last modified: October 1, 2021

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# Fatal error PHP

 *  Resolved [mate2193](https://wordpress.org/support/users/mate2193/)
 * (@mate2193)
 * [4 years, 8 months ago](https://wordpress.org/support/topic/fatal-error-php-7/)
 * Hi,
 * I would like some help in troubleshooting this error:
 * “Fatal error: Cannot declare class , because the name is already in use in /home/
   juiceont/public_html/wp-content/plugins/woocommerce-jetpack/includes/class-wcj-
   order-quantities.php on line 14”
 * There was no update lately, maybe automatic one. I can not acces wp-login either,
   only through FTP.
 * Any help is appreciated!
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Ffatal-error-php-7%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

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

 *  [Rynald0s](https://wordpress.org/support/users/rynald0s/)
 * (@rynald0s)
 * Automattic Happiness Engineer
 * [4 years, 8 months ago](https://wordpress.org/support/topic/fatal-error-php-7/#post-14927546)
 * Hi [@mate2193](https://wordpress.org/support/users/mate2193/)!
 * The error indicates that there’s another plugin in your site declaring the same
   class.
 * You would first need to regain access to your account, following the steps here:
 * [https://lynndye.com/cannot-login-to-wordpress-admin-because-of-plugin-conflict-how-to-fix-this/](https://lynndye.com/cannot-login-to-wordpress-admin-because-of-plugin-conflict-how-to-fix-this/)
 * Once that is done, you would need to do a full conflict test to see where the
   issue is coming from, as per the troubleshooting / conflict documentation here:
 * [https://docs.woocommerce.com/document/how-to-test-for-conflicts/](https://docs.woocommerce.com/document/how-to-test-for-conflicts/)
 * Let us know how that goes.
 * Cheers!
 *  Thread Starter [mate2193](https://wordpress.org/support/users/mate2193/)
 * (@mate2193)
 * [4 years, 8 months ago](https://wordpress.org/support/topic/fatal-error-php-7/#post-14928480)
 * Hi [@rynald0s](https://wordpress.org/support/users/rynald0s/),
 * Thank you for your message. I tried your suggestion, it looked good until the
   point when I wanted to login to wp-login. It shows a 503 Service Unavailable 
   error.
 * Any suggestion on this?
 *  [Jeremy Pry](https://wordpress.org/support/users/jpry/)
 * (@jpry)
 * [4 years, 8 months ago](https://wordpress.org/support/topic/fatal-error-php-7/#post-14930059)
 * Hi [@mate2193](https://wordpress.org/support/users/mate2193/),
 * > It shows a 503 Service Unavailable error.
 * That kind of an error means that there’s an issue with your server. That could
   be from the plugin conflict you mentioned previously, but it could also be a 
   different issue entirely. Could you check your website logs to see whether there
   is a new error message or any additional information?
 * It might also be worth asking your website host to see if they can help you find
   more information about what that error means so that we can understand what the
   next step is to get it resolved.
 *  Thread Starter [mate2193](https://wordpress.org/support/users/mate2193/)
 * (@mate2193)
 * [4 years, 8 months ago](https://wordpress.org/support/topic/fatal-error-php-7/#post-14949342)
 * Thank you [@rynald0s](https://wordpress.org/support/users/rynald0s/) and [@jpry](https://wordpress.org/support/users/jpry/)
   for your help!
 * I could solve the problem with your help!

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

The topic ‘Fatal error PHP’ is closed to new replies.

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 * 4 replies
 * 3 participants
 * Last reply from: [mate2193](https://wordpress.org/support/users/mate2193/)
 * Last activity: [4 years, 8 months ago](https://wordpress.org/support/topic/fatal-error-php-7/#post-14949342)
 * Status: resolved