Title: HTTP ERROR 500 after plugin update Last modified: July 19, 2017 --- # HTTP ERROR 500 after plugin update * [wpharsha](https://wordpress.org/support/users/wpharsha/) * (@wpharsha) * [8 years, 11 months ago](https://wordpress.org/support/topic/http-error-500-after-plugin-update/) * Hi, * After I upgraded the plugin with the new update, the page went blank and returned a HTTP 500 error. I had to contact my hosting support to deactivate the plugin and get back into my WP dashboard. * I am not sure what went wrong, but my WP and theme (Jupiter) are all of the latest versions, and there has never been any problem of this kind. * if it is not too much trouble, I would appreciate any guidance/remedy you could provide on the fatal error I experienced. Viewing 7 replies - 1 through 7 (of 7 total) * Thread Starter [wpharsha](https://wordpress.org/support/users/wpharsha/) * (@wpharsha) * [8 years, 11 months ago](https://wordpress.org/support/topic/http-error-500-after-plugin-update/#post-9331649) * I would like to clarify that I have not reinstalled the plugin. It is clear that the site crashed due to some interaction with the updated code of the plugin. I’d very much appreciate any help you could provide. Thanks. * Plugin Contributor [Ewout](https://wordpress.org/support/users/pomegranate/) * (@pomegranate) * [8 years, 11 months ago](https://wordpress.org/support/topic/http-error-500-after-plugin-update/#post-9331912) * Hi! I’m sorry the update broke your site. Was that with 2.0 or 2.0.1? Which PHP version do you use? You can find this under Woocommerce > System Status. The minimum requirement for this plugin is PHP5.3 and there was an error in 2.0.0 that caused incompatibility with PHP5.4 too (fixed in 2.0.1 though!). * A 500 error usually covers up an underlying PHP error. If you enabled [WP_DEBUG](https://codex.wordpress.org/Debugging_in_WordPress#Example_wp-config.php_for_Debugging), you’ll get to see this error, which will help us determining the root cause of this issue to fix it. You may also be able to find the error in your PHP error log if you have access to it. * Let me know what you find! * Ewout * Thread Starter [wpharsha](https://wordpress.org/support/users/wpharsha/) * (@wpharsha) * [8 years, 11 months ago](https://wordpress.org/support/topic/http-error-500-after-plugin-update/#post-9332445) * Hi Ewout, thank you for your reply. * The error logs are here: * Kindly check and let me know. * thanks! - This reply was modified 8 years, 11 months ago by [wpharsha](https://wordpress.org/support/users/wpharsha/). * Plugin Contributor [Ewout](https://wordpress.org/support/users/pomegranate/) * (@pomegranate) * [8 years, 11 months ago](https://wordpress.org/support/topic/http-error-500-after-plugin-update/#post-9332478) * Thanks for sharing! This particular bug was fixed in the 2.0.1 update. You may want to go back to [1.6.6](https://downloads.wordpress.org/plugin/woocommerce-pdf-invoices-packing-slips.1.6.6.zip) first and then upgrade again, it’s possible that the migration scripts were aborted prematurely and resulted in an incomplete upgrade. Downgrading to 1.6.6 first will ensure the migration scripts are executed properly. * Let me know if you still have any issues! * Ewout * Thread Starter [wpharsha](https://wordpress.org/support/users/wpharsha/) * (@wpharsha) * [8 years, 11 months ago](https://wordpress.org/support/topic/http-error-500-after-plugin-update/#post-9332548) * Hi, thank you for your response. I am not to savvy with WP, so how do I go about downgrading the plugin? ANy guidance would be appreciated. Thanks. * Plugin Contributor [Ewout](https://wordpress.org/support/users/pomegranate/) * (@pomegranate) * [8 years, 11 months ago](https://wordpress.org/support/topic/http-error-500-after-plugin-update/#post-9332568) * delete the current 2.0 version if you haven’t already. The [download 1.6.6 here](https://downloads.wordpress.org/plugin/woocommerce-pdf-invoices-packing-slips.1.6.6.zip). Install manually via Plugins > Add New > Upload file. Activate once, go to another page in wordpress/woocommerce (any), then go to the plugins page again and update to 2.0.1. * Thread Starter [wpharsha](https://wordpress.org/support/users/wpharsha/) * (@wpharsha) * [8 years, 11 months ago](https://wordpress.org/support/topic/http-error-500-after-plugin-update/#post-9332668) * thank you for your kind help. Shall do it and let you know if everything is ok. Viewing 7 replies - 1 through 7 (of 7 total) The topic ‘HTTP ERROR 500 after plugin update’ is closed to new replies. * ![](https://ps.w.org/woocommerce-pdf-invoices-packing-slips/assets/icon-256x256. png?rev=2189942) * [PDF Invoices & Packing Slips for WooCommerce](https://wordpress.org/plugins/woocommerce-pdf-invoices-packing-slips/) * [Frequently Asked Questions](https://wordpress.org/plugins/woocommerce-pdf-invoices-packing-slips/#faq) * [Support Threads](https://wordpress.org/support/plugin/woocommerce-pdf-invoices-packing-slips/) * [Active Topics](https://wordpress.org/support/plugin/woocommerce-pdf-invoices-packing-slips/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/woocommerce-pdf-invoices-packing-slips/unresolved/) * [Reviews](https://wordpress.org/support/plugin/woocommerce-pdf-invoices-packing-slips/reviews/) ## Tags * [Crash](https://wordpress.org/support/topic-tag/crash/) * [HTTP error 500](https://wordpress.org/support/topic-tag/http-error-500/) * [update](https://wordpress.org/support/topic-tag/update/) * 7 replies * 2 participants * Last reply from: [wpharsha](https://wordpress.org/support/users/wpharsha/) * Last activity: [8 years, 11 months ago](https://wordpress.org/support/topic/http-error-500-after-plugin-update/#post-9332668) * Status: not a support question