Rails Postgres Schema Issue - One of the following schema(s) is invalid: "test" "public"
<p>I've searched high and low for an answer to this but I'm coming up short.</p>
<p>I'm trying to build a multi-tenant application with Rails 4, Devise, and Apartment based on Postgres schemas. For my local Postgres server I decided to use PostgresApp. I followed the <a href="https://gorails.com/episodes/multitenancy-with-apartment" rel="nofollow noreferrer">Go Rails multi-tenant guide</a> and I had that setup (one user per tenant) working when this error started to appear. This started showing locally yesterday while I was trying to install the Invitable extension for Devise and I can't seem to find any clues as to what is going on.</p>
<p>Here is how I get the specific error:</p>
<pre><code>michael$ rake environment db:drop
michael$ rake db:create
michael$ rake db:migrate
== 20160908204559 DeviseCreateUsers: migrating ================================
-- create_table(:users)
   -&gt; 0.0091s
-- add_index(:users, :email, {:unique=&gt;true})
   -&gt; 0.0032s
-- add_index(:users, :reset_password_token, {:unique=&gt;true})
   -&gt; 0.0031s
-- add_index(:users, :confirmation_token, {:unique=&gt;true})
   -&gt; 0.0032s
-- add_index(:users, :unlock_token, {:unique=&gt;true})
   -&gt; 0.0029s
== 20160908204559 DeviseCreateUsers: migrated (0.0219s) =======================

    [WARNING] - The list of tenants to migrate appears to be empty. This could mean a few things:

      1. You may not have created any, in which case you can ignore this message
      2. You've run `apartment:migrate` directly without loading the Rails environment
        * `apartment:migrate` is now deprecated. Tenants will automatically be migrated with `db:migrate`

    Note that your tenants currently haven't been migrated. You'll need to run `db:migrate` to rectify this.
michael$ rake db:seed
Seeding test tenant
One of the following schema(s) is invalid: &quot;test&quot; &quot;public&quot;
</code></pre>
<p>When visiting the site locally, this results in Rails throwing:</p>
<blockquote>
<p>Apartment::TenantNotFound</p>
<p>One of the following schema(s) is invalid: &quot;www&quot; &quot;public&quot;</p>
</blockquote>
<p>Here is my apartment.rb initializer:</p>
<pre><code>require 'apartment/elevators/subdomain'
Apartment.configure do |config|
  config.excluded_models = %w{ User }
  config.tenant_names = lambda { User.pluck :subdomain }
  config.use_schemas = true
end
Rails.application.config.middleware.use 'Apartment::Elevators::Subdomain'
</code></pre>
<p>Here is my Users migration file:</p>
<pre><code>class DeviseCreateUsers &lt; ActiveRecord::Migration
  def change
    create_table(:users) do |t|
      ## Database authenticatable
      t.string :email,              null: false, default: &quot;&quot;
      t.string :encrypted_password, null: false, default: &quot;&quot;

      ## Recoverable
      t.string   :reset_password_token
      t.datetime :reset_password_sent_at

      ## Rememberable
      t.datetime :remember_created_at

      ## Trackable
      t.integer  :sign_in_count, default: 0, null: false
      t.datetime :current_sign_in_at
      t.datetime :last_sign_in_at
      t.string   :current_sign_in_ip
      t.string   :last_sign_in_ip

      ## Confirmable
      t.string   :confirmation_token
      t.datetime :confirmed_at
      t.datetime :confirmation_sent_at
      t.string   :unconfirmed_email # Only if using reconfirmable

      ## Lockable
      t.integer  :failed_attempts, default: 0, null: false # Only if lock strategy is :failed_attempts
      t.string   :unlock_token # Only if unlock strategy is :email or :both
      t.datetime :locked_at

      ## Invitable
      #t.string   :invitation_token
      #t.datetime :invitation_created_at
      #t.datetime :invitation_sent_at
      #t.datetime :invitation_accepted_at
      #t.integer  :invitation_limit
      #t.integer  :invited_by_id
      #t.string   :invited_by_type

      ## User Info
      t.string :first_name
      t.string :last_name
      t.string :subdomain
      t.string :role

      t.timestamps
    end

    add_index :users, :email,                unique: true
    add_index :users, :reset_password_token, unique: true
    add_index :users, :confirmation_token,   unique: true
    add_index :users, :unlock_token,         unique: true
    #add_index :users, :invitation_token,     unique: true
  end
end
</code></pre>
<p>I've also gone into the local Postrgres database by command line. The drop is working, the create database is working. I can provide these if needed. My guess at the moment is telling me that there is something wrong with how Rails is talking to PostgresApp or how I'm doing migrations. But maybe someone with more experience can point something out that I've missed.</p>
<p>So my questions are what am I doing to cause this? How can I fix it? And how can I learn more about what is wrong?</p>