If your website is down because of a fatal error, check your email. WordPress sends a recovery link to the administrator of the site via email. The link always looks like this: /wp-login.php?action=enter_recovery_mode. Click the link in that email to gain access to your site’s WordPress dashboard once again.
I completely understand the inconvenience this puts you in. I’ve checked this issue for you and it seems bdevselement is causing this issue. Unfortunately, we are unable to provide support for third-party plugins given that we do not have any control over them and cannot guarantee they will be fully compatible with Elementor.
In this case, we suggest you report this issue to the plugin authors and see if they can provide a fix on their end. If they need help from us, they can open an issue on our Github account and our developers will be happy to assist.