While editing with Elementor Page Builder and getting a 502 error, you need to do these things to change the Elementor editor loader method.
Step 1: Switch on Elementor Page Builder and click on Advanced button
Step 2: Under ‘Editor Loader’ panel, click on enable ‘Switch front-end editor loader method’.

Then, in order to raise a specific Apache service limit, you have to insert the lines below into your site’s htaccess file:
<IfModule mod_substitute.c>
SubstituteMaxLineLength 10M
</IfModule>
You are able to edit that file through FTP, SSH or the File Manager tool in cPanel.
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.
Image credit: docs.elemntor
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