Server Error (404 Not Found)

Hello there,

Thanks for the commendable plugin you have created and maintained.
I’m running into this error that has been raised by other users before: the Update/Publish button does not work, and clicking it brings up this tooltip – Server Error (404 Not Found).
The error persists even on a site where I have no other plugin installed, and am running the default WordPress Themes.

I followed the remedies given here https://docs.elementor.com/article/185-the-update-button-does-not-work/ and have not yet found a solution.
This error is now present on another site I manage, with the same webhost.

I kindly request your urgent assistance.

Kind regards,
David

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