after updating to 2.2.4 the web setup wizard no longer works return a blank page
Can you enable the Magento's logs and check, also, your webserver error log?
If you're getting a blank page is the result (probably) of an error 500 from your server.
Into those files you should be able to find a message that can help to udnerstand the error.
So... no errors on webserver error logs?