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520 error

Last Update: February 15, 2024


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.


Have more questions? We’re more than happy to assist.

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