In some SiteGround server configurations, users may get a 502 error. If you get this error when you try to edit a page, you should first change the loader method:
Go to Elementor > Settings > Advanced, and under ‘Editor Loader’, enable ‘Switch front-end editor loader method’.
This setting changes the Elementor editor loader method.
You then may need to increase a particular Apache service limit. To do that, add the following lines inside the website’s .htaccess file:
<IfModule mod_substitute.c>
SubstituteMaxLineLength10M
</IfModule>You can edit that file via SSH, FTP, or the File Manager tool in cPanel.