a .sql script file will be created in the /webassist folder of your site, you can use that script to create the database table manually.
the .sql script file will have a name similar to:
security_assist_localhost_<preset name>.users.sql
where <preset name> is the name of the database preset you selected in the security assist wizard.
see the "How to import a MySQL (.SQL) file to your database" tutorial on the learning resources page for details:
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