Title: ERR_HTTP2_PROTOCOL_ERROR
Last modified: December 24, 2022

---

# ERR_HTTP2_PROTOCOL_ERROR

 *  Resolved [buttersnot](https://wordpress.org/support/users/buttersnot/)
 * (@buttersnot)
 * [3 years, 5 months ago](https://wordpress.org/support/topic/err_http2_protocol_error-16/)
 * Hello, 3 weeks ago, I sent an email with the details of this error I’ve been 
   having on the Pro version. I haven’t heard back anything, despite sending a reminder,
   so I figure I should try here.
 * All the links/options work flawlessly, as far as I can tell, with the exception
   of one. When trying to view the Traffic Summary, I am greeted with an error message,
   which varies slightly depending on the browser used.
 * Under Firefox, it only says:
 * “An error occured during a connection to.. “
 * But under Chrome, I get more details:
 * The webpage at **https://**<domain-name>**/wp-admin/admin.php?page=wsm_traffic**
   might be temporarily down or it may have moved permanently to a new web address.
 * ERR_HTTP2_PROTOCOL_ERROR
 * I’ve tried different browsers, cleared cache, tried in Incognito mode, tried 
   from a Ubuntu desktop, tried from a Windows desktop, and get the same result.
 * As stated before, all the other menu options work fine. It’s only the summary
   one. Any idea how to fix this?

Viewing 6 replies - 1 through 6 (of 6 total)

 *  Plugin Author [osama.esh](https://wordpress.org/support/users/osamaesh/)
 * (@osamaesh)
 * [3 years, 5 months ago](https://wordpress.org/support/topic/err_http2_protocol_error-16/#post-16319034)
 * hello,
 * thank you for getting back to us, we are sorry for any inconvenience caused to
   you.
 * Please forward the email to our support email and we will help you.
 * Suggestion:
   – Deactivate and remove the plugin– Reinstall it again from your 
   account– Activate it and check.
 * If you have the same issue, please try deactivating the plugins one by one and
   try..
 *  Thread Starter [buttersnot](https://wordpress.org/support/users/buttersnot/)
 * (@buttersnot)
 * [3 years, 4 months ago](https://wordpress.org/support/topic/err_http2_protocol_error-16/#post-16323099)
 * Thank you for your response. The original emails were sent to support and were
   not responded to, that’s why I’m here.
 * The only other plugin I have is Akismet and it is disabled. I have uninstalled
   and reinstalled the Visitor plugin, same results.
 *  Thread Starter [buttersnot](https://wordpress.org/support/users/buttersnot/)
 * (@buttersnot)
 * [3 years, 4 months ago](https://wordpress.org/support/topic/err_http2_protocol_error-16/#post-16346029)
 * Any suggestion on what I can try, or something else I could provide to assist
   in resolving this?
 * thank you
 *  Plugin Author [osama.esh](https://wordpress.org/support/users/osamaesh/)
 * (@osamaesh)
 * [3 years, 4 months ago](https://wordpress.org/support/topic/err_http2_protocol_error-16/#post-16355021)
 * hello,
 * Checking for error logs is the first step for determining the nature of the problem.
   To check for error logs, follow these steps:
 * 1.Check the log files for error messages. Examine errlog.log first.
 * 2.If indicated, check optional log files for error messages.
 * 3.Identify the errors associated with your problem.
 *  Thread Starter [buttersnot](https://wordpress.org/support/users/buttersnot/)
 * (@buttersnot)
 * [3 years, 4 months ago](https://wordpress.org/support/topic/err_http2_protocol_error-16/#post-16355229)
 * I couldn’t find anything in the logs. I did, however, resolve the issue, although
   I don’t understand what the change has to do with this plugin. All I did is add
   the following lines in .htaccess:
 *     ```wp-block-code
       <IfModule mod_substitute.c>
       SubstituteMaxLineLength 10M
       </IfModule>
       ```
   
 * reloaded the page, and it’s working perfectly. Any idea ?
 *  Plugin Author [osama.esh](https://wordpress.org/support/users/osamaesh/)
 * (@osamaesh)
 * [3 years, 4 months ago](https://wordpress.org/support/topic/err_http2_protocol_error-16/#post-16355248)
 * Perfect! This was a server configuration issue.
 * Thank you for sharing the solution ♥

Viewing 6 replies - 1 through 6 (of 6 total)

The topic ‘ERR_HTTP2_PROTOCOL_ERROR’ is closed to new replies.

 * ![](https://ps.w.org/wp-stats-manager/assets/icon-256x256.gif?rev=2271306)
 * [WP Visitor Statistics (Real Time Traffic)](https://wordpress.org/plugins/wp-stats-manager/)
 * [Support Threads](https://wordpress.org/support/plugin/wp-stats-manager/)
 * [Active Topics](https://wordpress.org/support/plugin/wp-stats-manager/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/wp-stats-manager/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/wp-stats-manager/reviews/)

 * 9 replies
 * 2 participants
 * Last reply from: [osama.esh](https://wordpress.org/support/users/osamaesh/)
 * Last activity: [3 years, 4 months ago](https://wordpress.org/support/topic/err_http2_protocol_error-16/#post-16355248)
 * Status: resolved