Phx.gen.auth generated code fails test with duplicate table "users" already exists

Hi

I am working through the Pragmatic Programmer “Programming Phoenix LiveView” book, and in the code generation section we run the phx.gen.auth generator, but when I run the tests I get:

12:37:30.010 [info] extension “citext” already exists, skipping
** (Postgrex.Error) ERROR 42P07 (duplicate_table) relation “users” already exists
(ecto_sql 3.7.2) lib/ecto/adapters/sql.ex:760: Ecto.Adapters.SQL.raise_sql_call_error/1
(elixir 1.12.1) lib/enum.ex:1553: Enum.“-map/2-lists^map/1-0-”/2
(ecto_sql 3.7.2) lib/ecto/adapters/sql.ex:852: Ecto.Adapters.SQL.execute_ddl/4
(ecto_sql 3.7.2) lib/ecto/migration/runner.ex:343: Ecto.Migration.Runner.log_and_execute_ddl/3
(ecto_sql 3.7.2) lib/ecto/migration/runner.ex:117: anonymous fn/6 in Ecto.Migration.Runner.flush/0
(elixir 1.12.1) lib/enum.ex:2356: Enum.“-reduce/3-lists^foldl/2-0-”/3
(ecto_sql 3.7.2) lib/ecto/migration/runner.ex:116: Ecto.Migration.Runner.flush/0
(ecto_sql 3.7.2) lib/ecto/migration/runner.ex:280: Ecto.Migration.Runner.perform_operation/3

I can run mix ecto.reset

% mix ecto.reset
The database for Pento.Repo has been dropped
The database for Pento.Repo has been created

13:39:18.491 [info] == Running 20220209071806 Pento.Repo.Migrations.CreateUsersAuthTables.change/0 forward

13:39:18.501 [info] execute “CREATE EXTENSION IF NOT EXISTS citext”

13:39:18.631 [info] create table users

13:39:18.669 [info] create index users_email_index

13:39:18.671 [info] create table users_tokens

13:39:18.679 [info] create index users_tokens_user_id_index

13:39:18.680 [info] create index users_tokens_context_token_index

13:39:18.733 [info] == Migrated 20220209071806 in 0.2s

but the test fails with the same error. I’m not sure how to diagnose this as everything is pretty much generated code. Any ideas?