title: Artisan command says : Dotenv values containing spaces must be surrounded by quotes
body: <p>I'm trying to know the list of artisan command by using <code>php artisan list</code> . and the command return me the following error 
  <code>[Dotenv\Exception\InvalidFileException]
    Dotenv values containing spaces must be surrounded by quotes.</code>
  What is wrong? </p>
  
  <p>Thanks in advance. </p>