Local development instance: Invalid hash


Hi everybody,

I’ve just managed to set up a local Mastodon development on my Fedora system. When
I execute

bundle exec rails db:setup

to create the DB schema, an error occurs:

User Load (0.4ms)  SELECT  "users".* FROM "users" WHERE "users"."email" = $1 ORDER BY "users"."id" ASC LIMIT $2  [["email", "admin@localhost:3000"], ["LIMIT", 1]]
rails aborted!
BCrypt::Errors::InvalidHash: invalid hash
/home/thomas/Code/mastodon/db/seeds.rb:7:in `<top (required)>'
bin/rails:4:in `<main>'
Tasks: TOP => db:setup => db:seed
(See full trace by running task with --trace)

I have no idea what could be the cause. Can you give me a hint?