Title: coupon code checkout error Last modified: August 31, 2016 --- # coupon code checkout error * Resolved [oshber](https://wordpress.org/support/users/oshber/) * (@oshber) * [10 years, 2 months ago](https://wordpress.org/support/topic/coupon-code-checkout-error-1/) * Hi, * I am facing a problem while checking out with a coupon code in our site [http://www.zizira.com](http://www.zizira.com). It says there is an Internal server error when I hit the place order button. When I checked the browser console ,This is displayed:  jquery.min.js:2 POST [https://www.zizira.com/checkout/?wc-ajax=checkout](https://www.zizira.com/checkout/?wc-ajax=checkout) 500 (Internal Server Error) send @ jquery.min.js:2 v.extend.ajax @ jquery.min. js:2 b.submit @ checkout.min.js?ver=2.5.5:1 v.event.dispatch @ jquery.min.js: 2 o.handle.u @ jquery.min.js:2 * Can you point me in the right direction to fixing this problem? * Here is the system status report: * ``` ### WordPress Environment ### Home URL: https://www.zizira.com Site URL: https://www.zizira.com WC Version: 2.5.5 Log Directory Writable: ✔ WP Version: 4.4.2 WP Multisite: – WP Memory Limit: 256 MB WP Debug Mode: – Language: en_US ### Server Environment ### Server Info: nginx/1.7.9 PHP Version: 5.5.9-1ubuntu4.14 PHP Post Max Size: 32 MB PHP Time Limit: 300 PHP Max Input Vars: 1000 SUHOSIN Installed: – MySQL Version: 5.5.47 Max Upload Size: 32 MB Default Timezone is UTC: ✔ fsockopen/cURL: ✔ SoapClient: ✔ DOMDocument: ✔ GZip: ✔ Multibyte String: ✔ Remote Post: ✔ Remote Get: ✔ ### Database ### WC Database Version: 2.5.5 : woocommerce_sessions: ✔ woocommerce_api_keys: ✔ woocommerce_attribute_taxonomies: ✔ woocommerce_termmeta: ✔ woocommerce_downloadable_product_permissions: ✔ woocommerce_order_items: ✔ woocommerce_order_itemmeta: ✔ woocommerce_tax_rates: ✔ woocommerce_tax_rate_locations: ✔ ### Active Plugins (37) ### Akismet: by Automattic – 3.1.8 Black Studio TinyMCE Widget: by Black Studio – 2.2.8 Colored Tags Tag Cloud Widget: by EnergieBoer – 1.24 Contact Form 7: by Takayuki Miyoshi – 4.4 Download Monitor: by Never5 – 1.9.1 Email Before Download: by M&S Consulting – 3.4.2 Enable Media Replace: by Måns Jonasson – 3.0.4 Huge IT Image Gallery: by Huge-IT – 10.0 Homepage Control: by WooThemes – 2.0.1 Instapage: by instapage – 2.34 Jetpack by WordPress.com: by Automattic – 3.9.4 Leadin: by Leadin – 4.5.0 Meta Slider: by Matcha Labs – 3.3.6 Pay with Amazon.: by Amazon – 1.0.0 Redirection: by John Godley – 2.4.3 Regenerate Thumbnails: by Alex Mills (Viper007Bond) – 2.2.6 Page Builder by SiteOrigin: by SiteOrigin – 2.3.2 SiteOrigin Widgets Bundle: by SiteOrigin – 1.5.9 Storefront Blog Customiser: by WooThemes – 1.1.4 Storefront Blog Excerpt: by WooAssist – 1.1.0 Storefront Checkout Customiser: by WooThemes – 1.1.4 Storefront Designer: by WooThemes – 1.7.3 Storefront Parallax Hero: by WooThemes – 1.4.3 Title Toggle for Storefront Theme: by Wooassist – 1.2.1 Storefront WooCommerce Customiser: by WooThemes – 1.8.1 Theme Customisations: by WooThemes – 1.0.0 TJ Custom CSS: by Theme Junkie – 0.1.6 WooCommerce Checkout Manager: by Ephrain Marchan – 4.0 WooCommerce PDF Invoices & Packing Slips: by Ewout Fernhout – 1.5.28 WooCommerce Predictive Search PRO: by A3 Revolution – 3.3.0 WooCommerce: by WooThemes – 2.5.5 WooSidebars: by WooThemes – 1.4.3 WooThemes Helper: by WooThemes – 1.6.0 Yoast SEO: by Team Yoast – 3.1.1 WP-Mail-SMTP: by Callum Macdonald – 0.9.5 WP Rocket: by WP Rocket – 2.7.2 Yet Another Related Posts Plugin: by Adknowledge – 4.3.1 ### Settings ### Force SSL: ✔ Currency: INR (₹) Currency Position: left Thousand Separator: , Decimal Separator: . Number of Decimals: 2 ### API ### API Enabled: ✔ API Version: 3.1.0 ### WC Pages ### Shop Base: #14 - /online-healthy-food-store/ Cart: #15 - /cart/ Checkout: #16 - /checkout/ My Account: #17 - /my-account/ ### Taxonomies ### Product Types: external (external) grouped (grouped) simple (simple) variable (variable) ### Theme ### Name: Outlet Version: 2.0.0 – 2.0.1 is available Author URL: http://woothemes.com Child Theme: ✔ Parent Theme Name: Storefront Parent Theme Version: 1.6.1 Parent Theme Author URL: http://www.woothemes.com WooCommerce Support: ✔ ### Templates ### Overrides: – ``` * [https://wordpress.org/plugins/woocommerce/](https://wordpress.org/plugins/woocommerce/) Viewing 9 replies - 1 through 9 (of 9 total) * Plugin Contributor [Mike Jolley](https://wordpress.org/support/users/mikejolley/) * (@mikejolley) * [10 years, 2 months ago](https://wordpress.org/support/topic/coupon-code-checkout-error-1/#post-7195758) * Find your server error logs and look for a ‘fatal error’ for more information. * Thread Starter [oshber](https://wordpress.org/support/users/oshber/) * (@oshber) * [10 years, 2 months ago](https://wordpress.org/support/topic/coupon-code-checkout-error-1/#post-7195821) * Hi, * I found the server error logs but I could not make out what the problem is. Could you have a look at this and let me know what it means? * 3/22/2016 1:02:32 PM – www: PHP Fatal error: Unsupported operand types in /var/ www/zizira.com/wp-content/plugins/woocommerce-pdf-invoices-packing-slips/lib/ dompdf/include/font_metrics.cls.php on line 262 * 3/22/2016 1:02:32 PM – www: PHP Warning: file_put_contents(/var/www/zizira.com/ wp-content/uploads/wpo_wcpdf/fonts/dompdf_font_family_cache.php): failed to open stream: Permission denied in /var/www/zizira.com/wp-content/plugins/woocommerce- pdf-invoices-packing-slips/lib/dompdf/include/font_metrics.cls.php on line 257 * 3/21/2016 11:56:38 AM – www: PHP Warning: Invalid argument supplied for foreach() in /var/www/zizira.com/wp-content/plugins/woocommerce-checkout-manager/includes/ classes/main.php on line 2197 * 3/21/2016 11:56:06 AM – www: PHP Warning: Invalid argument supplied for foreach() in /var/www/zizira.com/wp-content/plugins/woocommerce-checkout-manager/includes/ classes/main.php on line 2197 * 3/21/2016 11:14:00 AM – www: PHP Fatal error: Call to undefined function get_header() in /var/www/zizira.com/wp-content/themes/storefront/index.php on line 14 * Thank you. * Plugin Contributor [Mike Jolley](https://wordpress.org/support/users/mikejolley/) * (@mikejolley) * [10 years, 2 months ago](https://wordpress.org/support/topic/coupon-code-checkout-error-1/#post-7195828) * Looks like this is the one to worry about: * ``` 3/22/2016 1:02:32 PM - www: PHP Fatal error: Unsupported operand types in /var/www/zizira.com/wp-content/plugins/woocommerce-pdf-invoices-packing-slips/lib/dompdf/include/font_metrics.cls.php on line 262 ``` * PDF INVOICES. See if disabling it helps. * Thread Starter [oshber](https://wordpress.org/support/users/oshber/) * (@oshber) * [10 years, 2 months ago](https://wordpress.org/support/topic/coupon-code-checkout-error-1/#post-7195830) * Are you talking about the PDF Invoices for woocommerce? * Plugin Contributor [Mike Jolley](https://wordpress.org/support/users/mikejolley/) * (@mikejolley) * [10 years, 2 months ago](https://wordpress.org/support/topic/coupon-code-checkout-error-1/#post-7195832) * Yes. * Thread Starter [oshber](https://wordpress.org/support/users/oshber/) * (@oshber) * [10 years, 2 months ago](https://wordpress.org/support/topic/coupon-code-checkout-error-1/#post-7195834) * It is this plugin that had caused this issue. * Thread Starter [oshber](https://wordpress.org/support/users/oshber/) * (@oshber) * [10 years, 2 months ago](https://wordpress.org/support/topic/coupon-code-checkout-error-1/#post-7195835) * Do you have any suggestions on an alternative PDF invoice plugin that won’t cause this issue? Is this plugin conflict issue resolvable? * A big thank you for helping me figure out the problem. * Plugin Support [Riaan K.](https://wordpress.org/support/users/riaanknoetze/) * (@riaanknoetze) * [10 years, 2 months ago](https://wordpress.org/support/topic/coupon-code-checkout-error-1/#post-7195839) * > Do you have any suggestions on an alternative PDF invoice plugin that won’t > cause this issue? * Woo has the following extension: [Print Invoices & Packing lists](https://www.woothemes.com/products/print-invoices-packing-lists/) * > > * Is this plugin conflict issue resolvable? * > It should be, but you’d need to get in touch with the developers of that plugin > to find out more about that. * Thread Starter [oshber](https://wordpress.org/support/users/oshber/) * (@oshber) * [10 years, 2 months ago](https://wordpress.org/support/topic/coupon-code-checkout-error-1/#post-7195856) * OK.Thank you very much. Viewing 9 replies - 1 through 9 (of 9 total) The topic ‘coupon code checkout error’ is closed to new replies. * ![](https://ps.w.org/woocommerce/assets/icon.svg?rev=3234504) * [WooCommerce](https://wordpress.org/plugins/woocommerce/) * [Frequently Asked Questions](https://wordpress.org/plugins/woocommerce/#faq) * [Support Threads](https://wordpress.org/support/plugin/woocommerce/) * [Active Topics](https://wordpress.org/support/plugin/woocommerce/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/woocommerce/unresolved/) * [Reviews](https://wordpress.org/support/plugin/woocommerce/reviews/) * 9 replies * 3 participants * Last reply from: [oshber](https://wordpress.org/support/users/oshber/) * Last activity: [10 years, 2 months ago](https://wordpress.org/support/topic/coupon-code-checkout-error-1/#post-7195856) * Status: resolved