When you receive this message “Web server is returning an unknown error” while trying to edit with Elementor Page Builder, it means that you get a 520 error. So let check out this instruction:

Try another browser to fix it.

In case you are currently using Cloudflare, it is possible that you get a problem with its Rocket Loader feature.

In conclusion.

If you have any questions about this, don’t hesitate to leave a comment below. we will reply as soon as possible. Besides, you can also take a look at our free Elementor WordPress themes here to get a wonderful theme for yourself.

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