Before writing here we asked for support for the plugin but we were told that it is something in the Contact Form plugin itself. Therefore, we have posted on the forum to see what the problem is.
We see that the problem is with Elementor, but we already talked to their support because we have the license purchased and they told us that it must be something in the Contact Form 7 plugin that conflicts with elementor itself.
We change the theme to default and deactivate all plugins. We were activating plugin by plugin and the error pops up only with Contact form 7 and Elementor plugins.
The error comes up a bit randomly as you browse the website and the WordPress admin panel. Where we have seen that it always comes up is when editing an elementor loop element.
