Title: URL validation failed error Last modified: May 8, 2020 --- # URL validation failed error * Resolved [kerm131](https://wordpress.org/support/users/kerm131/) * (@kerm131) * [6 years ago](https://wordpress.org/support/topic/url-validation-failed-error/) * Hello! * I use Authentic theme on my website. To create AMP pages I’ve installed AMP plugin, but I can’t solve the issue that I faced with. When I choose Standart or Transitional mode, I get the error: * “URL validation failed due to the AMP validation request not returning JSON data. This may be due to a PHP fatal error occurring. Please check your server PHP error logs; to do this you may need to enable WP_DEBUG_LOG.” * Unfortunately, there are no errors in the error log. At the front end I the this: [https://prnt.sc/sd4rum](https://prnt.sc/sd4rum) When I click “Review 40 validation errors” I forwarded to the empty page: [https://prnt.sc/sd4ssm](https://prnt.sc/sd4ssm) * And for this moment I stucked with this issue. * Site Heath: Good * Active plugins: Absolute Reviews Advanced Popups AMP Canvas Contact Form 7 Kirki Customizer Framework Loco Translate One Click Demo Import Powerkit Regenerate Thumbnails SearchWP Live Ajax Search VDZ Yandex Metrika Plugin Yoast SEO * I’ve tried to enable/disable all of them, but there is no difference( * Please, help me to find a solution. * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Furl-validation-failed-error%2F%3Foutput_format%3Dmd&locale=en_US) to see the link]_ Viewing 12 replies - 1 through 12 (of 12 total) * [James Osborne](https://wordpress.org/support/users/jamesosborne/) * (@jamesosborne) * [6 years ago](https://wordpress.org/support/topic/url-validation-failed-error/#post-12802129) * [@kerm131](https://wordpress.org/support/users/kerm131/) It looks like you’re using an alternative AMP plugin. You’ll need to submit your support topic to the [correct support forum](https://wordpress.org/support/plugin/accelerated-mobile-pages/). * Thread Starter [kerm131](https://wordpress.org/support/users/kerm131/) * (@kerm131) * [6 years ago](https://wordpress.org/support/topic/url-validation-failed-error/#post-12802187) * [@jamesosborne](https://wordpress.org/support/users/jamesosborne/) sorry, the mentioned plugin is turned off. AMP works again * [James Osborne](https://wordpress.org/support/users/jamesosborne/) * (@jamesosborne) * [6 years ago](https://wordpress.org/support/topic/url-validation-failed-error/#post-12802340) * [@kerm131](https://wordpress.org/support/users/kerm131/) As you’re using the plugin in `standard` mode all those validation errors are handled by the plugin. Can you share your full [Site Health information](https://i.imgur.com/Rtkmsba.png) and we can investigate the notice you’ve been encountering? * Thread Starter [kerm131](https://wordpress.org/support/users/kerm131/) * (@kerm131) * [6 years ago](https://wordpress.org/support/topic/url-validation-failed-error/#post-12802357) * [@jamesosborne](https://wordpress.org/support/users/jamesosborne/) * ``` ### wp-core ### version: 5.4.1 site_language: ru_RU user_language: ru_RU timezone: +03:00 permalink: /%category%/%postname%/ https_status: true user_registration: 0 default_comment_status: open multisite: false user_count: 1 dotorg_communication: true ### wp-paths-sizes ### wordpress_path: /home/prodaite/bkb.by wordpress_size: 45,79 MB (48014452 bytes) uploads_path: /home/prodaite/bkb.by/wp-content/uploads uploads_size: 27,98 MB (29335626 bytes) themes_path: /home/prodaite/bkb.by/wp-content/themes themes_size: 8,58 MB (9001653 bytes) plugins_path: /home/prodaite/bkb.by/wp-content/plugins plugins_size: 40,11 MB (42058415 bytes) database_size: 7,13 MB (7479416 bytes) total_size: 129,59 MB (135889562 bytes) ### wp-active-theme ### name: Authentic (authentic) version: 6.1.2 author: Code Supply Co. author_website: http://codesupply.co parent_theme: none theme_features: editor-style, post-thumbnails, align-wide, title-tag, html5, automatic-feed-links, responsive-embeds, post-formats, canvas-disable-section-responsive, powerkit-post-format-ui, powerkit-post-featured-ui, jetpack-responsive-videos, amp, widgets, menus theme_path: /home/prodaite/bkb.by/wp-content/themes/authentic ### wp-themes-inactive (3) ### Twenty Nineteen: version: 1.5, author: Команда WordPress Twenty Seventeen: version: 2.3, author: Команда WordPress Twenty Twenty: version: 1.2, author: Команда WordPress ### wp-plugins-active (13) ### Absolute Reviews: version: 1.0.4, author: Code Supply Co. Advanced Popups: version: 1.0.3, author: Code Supply Co. AMP: version: 1.5.3, author: AMP Project Contributors Canvas: version: 2.0.2.2, author: Code Supply Co. Contact Form 7: version: 5.1.7, author: Takayuki Miyoshi Kirki Customizer Framework: version: 3.1.2, author: David Vongries Loco Translate: version: 2.3.3, author: Tim Whitlock One Click Demo Import: version: 2.5.2, author: ProteusThemes Powerkit: version: 2.1.3.1, author: Code Supply Co. Regenerate Thumbnails: version: 3.1.3, author: Alex Mills (Viper007Bond) SearchWP Live Ajax Search: version: 1.4.6.1, author: SearchWP, LLC VDZ Yandex Metrika Plugin: version: 1.4.5, author: VadimZ Yoast SEO: version: 14.0.4, author: Team Yoast ### wp-plugins-inactive (2) ### Accelerated Mobile Pages: version: 1.0.47, author: Ahmed Kaludi, Mohammed Kaludi Autoptimize: version: 2.7.1, author: Frank Goossens (futtta) ### wp-media ### image_editor: WP_Image_Editor_GD imagick_module_version: Не доступно imagemagick_version: Не доступно gd_version: 2.2.5 ghostscript_version: 9.25 ### wp-server ### server_architecture: Linux 3.10.0-962.3.2.lve1.5.28.el7.x86_64 x86_64 httpd_software: LiteSpeed php_version: 7.4.5 64bit php_sapi: litespeed max_input_variables: 1000 time_limit: 30 memory_limit: 512M max_input_time: -1 upload_max_size: 200M php_post_max_size: 64M curl_version: 7.62.0 OpenSSL/1.0.2k suhosin: false imagick_availability: false htaccess_extra_rules: true ### wp-database ### extension: mysqli server_version: 10.1.44-MariaDB-cll-lve client_version: mysqlnd 7.4.5 ### wp-constants ### WP_HOME: undefined WP_SITEURL: undefined WP_CONTENT_DIR: /home/prodaite/bkb.by/wp-content WP_PLUGIN_DIR: /home/prodaite/bkb.by/wp-content/plugins WP_MAX_MEMORY_LIMIT: 512M WP_DEBUG: false WP_DEBUG_DISPLAY: true WP_DEBUG_LOG: false SCRIPT_DEBUG: false WP_CACHE: false CONCATENATE_SCRIPTS: undefined COMPRESS_SCRIPTS: undefined COMPRESS_CSS: undefined WP_LOCAL_DEV: undefined DB_CHARSET: utf8 DB_COLLATE: undefined ### wp-filesystem ### wordpress: writable wp-content: writable uploads: writable plugins: writable themes: writable ### amp_wp ### amp_mode_enabled: standard amp_templates_enabled: post, page, attachment, is_singular, is_front_page, is_home, is_archive, is_author, is_date, is_search, is_404, is_category, is_tag amp_serve_all_templates: true amp_css_transient_caching_disabled: false amp_css_transient_caching_threshold: 5000 transients per day amp_css_transient_caching_sampling_range: 14 days amp_css_transient_caching_transient_count: 134 amp_css_transient_caching_time_series: 20200508: 134 ``` * Plugin Author [Weston Ruter](https://wordpress.org/support/users/westonruter/) * (@westonruter) * [6 years ago](https://wordpress.org/support/topic/url-validation-failed-error/#post-12803133) * Humm. In the past I saw this happen when a site had a plugin that tried injecting an HTML comment at the end of the response, and this caused the JSON to break. * That doesn’t seem to be the case here, however. * I have a debugging plugin for you which should help identify where the failure is. * Please [install](https://gist.github.com/westonruter/6110fbc4bef0c4b8c021a112012f7e9c) this extension plugin: [https://gist.github.com/westonruter/48e546e4636bec5fafd8a29e0fc7a001](https://gist.github.com/westonruter/48e546e4636bec5fafd8a29e0fc7a001) * Once you activate, you’ll see two new menu items under the AMP admin bar menu item: 1. Debug AMP validation response directly 2. Debug AMP validation response w/ loopback request * When clicking either of those and things are working properly, you should see valid JSON data being returned in both cases. * I suspect the loopback request check (2) is going fail with the `response_not_json` issue. The direct request (1) should then reveal what exactly is in the JSON that is causing the problem. * Thread Starter [kerm131](https://wordpress.org/support/users/kerm131/) * (@kerm131) * [6 years ago](https://wordpress.org/support/topic/url-validation-failed-error/#post-12806090) * [@westonruter](https://wordpress.org/support/users/westonruter/) Hello! Just installed plugin. Results: * [2] Debug AMP validation response w/ loopback request { “success”: false, “results”:{“ errors”: { “response_not_json”: [ “” ] }, “error_data”: [] } } * [1] Debug AMP validation response directly * Errors: [https://bkb.by/lombardy/kak-poluchit-bolee-vygodnyj-kredit-v-lombarde/?amp&_validate=1ce27565c666f968b3dda0e5d063310b](https://bkb.by/lombardy/kak-poluchit-bolee-vygodnyj-kredit-v-lombarde/?amp&_validate=1ce27565c666f968b3dda0e5d063310b) * Plugin Author [Weston Ruter](https://wordpress.org/support/users/westonruter/) * (@westonruter) * [6 years ago](https://wordpress.org/support/topic/url-validation-failed-error/#post-12807157) * [@kerm131](https://wordpress.org/support/users/kerm131/) please copy to the output of the second one into a [Gist](https://gist.github.com/), for example. And then share the URL to the Gist. * Thread Starter [kerm131](https://wordpress.org/support/users/kerm131/) * (@kerm131) * [6 years ago](https://wordpress.org/support/topic/url-validation-failed-error/#post-12809783) * [@westonruter](https://wordpress.org/support/users/westonruter/) sorry for delay, here’s the link:[https://gist.github.com/kerm131/781c698b20491e8f14014747e116853f](https://gist.github.com/kerm131/781c698b20491e8f14014747e116853f) * Plugin Author [Weston Ruter](https://wordpress.org/support/users/westonruter/) * (@westonruter) * [6 years ago](https://wordpress.org/support/topic/url-validation-failed-error/#post-12811452) * [@kerm131](https://wordpress.org/support/users/kerm131/) Interesting. I don’t actually see any JSON validation error. I’m able to pass that into `json_decode()` locally in PHP and it parses fine. * The code in question that is failing in the plugin is this: * ``` if ( '{' !== substr( $response, 0, 1 ) ) { return new WP_Error( 'response_not_json' ); } ``` * So the first byte in the response is not `{` somehow. If I try getting the contents of the non-AMP page and pass it into a hex viewer like so: * `curl -s https://bkb.by/lombardy/kak-poluchit-bolee-vygodnyj-kredit-v-lombarde/ | xxd | head -n 3` * The first three lines I get back are the following: * ``` 00000000: efbb bf3c 2144 4f43 5459 5045 2068 746d ...