hejka.
Mam takowy problem:
Mam takie pliki:

guestbook.rb który załadowywuje sinatre i tworzy odwołanie do strony "/"

<ort>require "sinatra"
require "sinatra/reloader"

get "/" do
erb :index
end
</ort>

index.erb który przechowuje zwykły napis:
<ort>

Witaj w Księdze Gości


</ort></p>

layout.erb który przechowuje szkielet strony:
<ort><!DOCTYPE html>

<html lang="en"> <head> <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous"> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1"> <title>Księga Gości</title> </head> <body>
<%= yield %>
</body> </html></ort>

i init_db.rb który zajmuje się całą bazą danych od jej tworzenia:
<ort>require 'sequel'

DB = Sequel.sqlite "database.db"

DB.create_table :posts do
primary_key :id
String :author
Text :content
DataTime :created_at
end

posts = DB[:posts]

posts.insert author: "Batman",
content: "Hello",
created_at: Time.now - 5

posts.insert author: "Scorpion",
content: "Come over here!",
created_at: Time.now
</ort>

Pobrałem gem sequel sqllite wpisując w konsolę gem install sqlite3 sequel
Jak uruchamiam init_db.rb mam taki błąd:

C:/Ruby23-x64/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rbin require': LoadError: cannot load such file -- sqlite3/sqlite3_native (Sequel::AdapterNotFound) from C:/Ruby23-x64/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in require'
from C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sqlite3-1.3.11-x64-mingw32/lib/sqlite3.rbin rescue in <top (required)>' from C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sqlite3-1.3.11-x64-mingw32/lib/sqlite3.rb:2:in <top (required)>'
from C:/Ruby23-x64/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rbin require' from C:/Ruby23-x64/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:127:in rescue in require'
from C:/Ruby23-x64/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rbin require' from C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sequel-4.37.0/lib/sequel/adapters/sqlite.rb:3:in <top (required)>'
from C:/Ruby23-x64/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rbin require' from C:/Ruby23-x64/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in require'
from C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sequel-4.37.0/lib/sequel/database/connecting.rbin load_adapter' from C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sequel-4.37.0/lib/sequel/database/connecting.rb:28:in adapter_class'
from C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sequel-4.37.0/lib/sequel/database/connecting.rbin connect' from C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sequel-4.37.0/lib/sequel/core.rb:108:in connect'
from C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sequel-4.37.0/lib/sequel/core.rbin adapter_method' from C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sequel-4.37.0/lib/sequel/core.rb:387:in sqlite'
from C:/Users/IdeaPad/Desktop/Ruby - projekty praktyczne/Ksi�ga Go�ci/init_db.rbin `<main>'
Exited with code=1 in 0.842 seconds