title: RobotFramework: Keyword 'Selenium2Library.Input Text' Error Keyword 'Input Username' expected 1 arguments, got 0
body: <p>Code:</p>
  
  <pre><code>Input Username
      [Arguments]    ${username}
      Input Text    login_username_id    ${username}
  </code></pre>
  
  <p>Error:- <code>Keyword 'Input Username' expected 1 arguments, got 0</code>
  May i know why am i getting this error?</p>