520 error

Last Update: May 19, 2026

Issue

Editing with Elementor gives the following error:

Error 520: Web Server Is Returning an Unknown Error.

You can get this error when the website does something unexpected, resulting in an unknown error.

Possible causes

Following may be the causes:

  • Browser issue
  • Rocket Loader issue (For Cloudflare users) – Rocket Loader automatically changes the scripts to load asynchronously, which breaks the site editor and prevents you from making changes.

Solution

  • Try a different browser to troubleshoot.
  • Cloudflare users may have a problem with its Rocket Loader feature. To resolve, see Elementor And Cloudflare Rocket Loader
  • Users who are not using Cloudflare can submit a ticket to Elementor support.
    Note: Essential, Advanced, Advanced Solo, and Elementor App subscriptions include access to the Elementor chatbot. Expert, Agency, Elementor One, Elementor Hosting, and Priority Support plans also include access to the Elementor support team.

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