Title: REST API and loopback request errors Last modified: April 21, 2020 --- # REST API and loopback request errors * Resolved [Tim Derouin](https://wordpress.org/support/users/tderouindesign/) * (@tderouindesign) * [6 years, 1 month ago](https://wordpress.org/support/topic/rest-api-and-loopback-request-errors-2/) * The site health area has flagged two critical issues that are only present when this contact form plugin is activated. * 1. The REST API encountered an error 2. Your site could not complete a loopback request * Any thoughts as to why these issues are being flagged? Thank you! Viewing 10 replies - 1 through 10 (of 10 total) * Plugin Author [bestwebsoft](https://wordpress.org/support/users/bestwebsoft/) * (@bestwebsoft) * [6 years, 1 month ago](https://wordpress.org/support/topic/rest-api-and-loopback-request-errors-2/#post-12737203) * Hi, * We found the issue and we will fix it in the next plugin updates. * [wpmcg](https://wordpress.org/support/users/wpmcg/) * (@wpmcg) * [5 years, 11 months ago](https://wordpress.org/support/topic/rest-api-and-loopback-request-errors-2/#post-12988458) * Hello! * This seems to still be happening even though updates have come out. In addition, the following error is also being generated from this plugin. * > **Background updates may not be working properly** > Background updates ensure that WordPress can auto-update if a security update > is released for the version you are currently using. > Warning: Could not confirm that the wp_version_check() filter is available. - This reply was modified 5 years, 11 months ago by [wpmcg](https://wordpress.org/support/users/wpmcg/). - This reply was modified 5 years, 11 months ago by [wpmcg](https://wordpress.org/support/users/wpmcg/). * Plugin Author [bestwebsoft](https://wordpress.org/support/users/bestwebsoft/) * (@bestwebsoft) * [5 years, 9 months ago](https://wordpress.org/support/topic/rest-api-and-loopback-request-errors-2/#post-13220950) * Hi, * We will investigate the issue and we will fix it in the next plugin updates. * [tooltek](https://wordpress.org/support/users/tooltek/) * (@tooltek) * [5 years, 9 months ago](https://wordpress.org/support/topic/rest-api-and-loopback-request-errors-2/#post-13287217) * Hi, * It seems that session_start() function is responsible of this Worpdress site health alert. It also occurs on your Google Captcha plugin. * Hope it helps. * [lkafrazier](https://wordpress.org/support/users/lkafrazier/) * (@lkafrazier) * [5 years, 7 months ago](https://wordpress.org/support/topic/rest-api-and-loopback-request-errors-2/#post-13578554) * Hello…the same thing is happening to my site with the contact form plugin activated. * An Active PHP session was detected The REST API encountered an error Your site could not complete a loopback request * Can you advise what it causing this and do I need to be alarmed that’s throwing it as critical issues to my site? * Many thanks! * Plugin Author [bestwebsoft](https://wordpress.org/support/users/bestwebsoft/) * (@bestwebsoft) * [5 years, 3 months ago](https://wordpress.org/support/topic/rest-api-and-loopback-request-errors-2/#post-13985698) * Hi, * The plugin is updated. Please check if the problem remains. * [rwsiv](https://wordpress.org/support/users/rwsiv/) * (@rwsiv) * [5 years, 3 months ago](https://wordpress.org/support/topic/rest-api-and-loopback-request-errors-2/#post-14066639) * Hello, * I can confirm that the problem continues for us. The site has WordPress 5.6.1 and Contact Form by BestWebSoft Version 4.2.2. If we install the Health Check& Troubleshooting plugin and use it to disable the Contact Form by BestWebSoft plugin, the problem stops. All of the plugins and themes are up to date. * Plugin Author [bestwebsoft](https://wordpress.org/support/users/bestwebsoft/) * (@bestwebsoft) * [5 years, 2 months ago](https://wordpress.org/support/topic/rest-api-and-loopback-request-errors-2/#post-14132599) * Hi, * We will investigate the issue. * Thank you. * Thread Starter [Tim Derouin](https://wordpress.org/support/users/tderouindesign/) * (@tderouindesign) * [5 years, 2 months ago](https://wordpress.org/support/topic/rest-api-and-loopback-request-errors-2/#post-14134524) * [@rwsiv](https://wordpress.org/support/users/rwsiv/) I recommend finding an alternative plugin since this was first flagged as a problem almost a year ago. I was forced to make a change but would be interested to know when this is fully resolved as I may go back if it makes sense to. * [georgesupport](https://wordpress.org/support/users/georgesupport/) * (@georgesupport) * [5 years ago](https://wordpress.org/support/topic/rest-api-and-loopback-request-errors-2/#post-14502613) * Hi, * The plugin has been updated. Since there is no reply from you, we consider this topic as resolved. We hope you’ve found the solution. If you have any questions, please feel free to contact us. Viewing 10 replies - 1 through 10 (of 10 total) The topic ‘REST API and loopback request errors’ is closed to new replies. * ![](https://ps.w.org/contact-form-plugin/assets/icon-256x256.gif?rev=2565795) * [Contact Form by BestWebSoft - Advanced WP Contact Form Builder for WordPress](https://wordpress.org/plugins/contact-form-plugin/) * [Frequently Asked Questions](https://wordpress.org/plugins/contact-form-plugin/#faq) * [Support Threads](https://wordpress.org/support/plugin/contact-form-plugin/) * [Active Topics](https://wordpress.org/support/plugin/contact-form-plugin/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/contact-form-plugin/unresolved/) * [Reviews](https://wordpress.org/support/plugin/contact-form-plugin/reviews/) ## Tags * [loopback request](https://wordpress.org/support/topic-tag/loopback-request/) * 10 replies * 7 participants * Last reply from: [georgesupport](https://wordpress.org/support/users/georgesupport/) * Last activity: [5 years ago](https://wordpress.org/support/topic/rest-api-and-loopback-request-errors-2/#post-14502613) * Status: resolved