sftp:
  sessionFactory:
    host: ${HOST:127.0.0.1}
    username: ${USERNAME:test}
    password: ${PASSWORD: test}

Caused by: mapping values are not allowed here
 in 'reader', line 26, column 25:
        password: ${PASSWORD: test}

sftp:
  sessionFactory:
    host: 127.0.0.1
    username: test
    password: ' test'