I believe you’re still doing this:
The Admin’s config is this, provided that your Laravel site has its public facing files in a public folder:
If this is how your site is structured, then these are the only rules your .htaccess should have after line 3. If you have altered your site’s structure (the files are no longer in a public directory), then this rule can only break your site, not help it, so you should remove it and configure your rules to work well.