Since the Last WordPress update 5.0.1 Visual Composer editor stopped showing up in the page edit. Today WordPress Mechanic will show you how to sort the Visual Composer issue with WordPress 5.0.1 The first way to sort this issue is by updating the Visual Composer to the latest version. The second way to sort the issue is by installing and activating the WordPress Classic Editor
Classic Editor is an official plugin maintained by the WordPress team that restores the previous (“classic”) WordPress editor and the “Edit Post” screen. It makes it possible to use plugins that extend that screen, add old-style meta boxes, or otherwise depend on the previous editor.
By default, this plugin hides all functionality available in the new Block Editor (“Gutenberg”).