Failed to run SQL query

Hey, I am trying to figure out why I'm getting this error thrown when I run query for User Management Starter. The error I get is

Failed to run sql query: function "handle_new_user" already exists with same argument types

Failed to run sql query: function "handle_new_user" already exists with same argument types

Failed to run sql query: function "handle_new_user" already exists with same argument types

Failed to run sql query: function "handle_new_user" already exists with same argument types

What do I do? Thanks