title: asana tasks api does not work for GET /tasks GET /workspaces/workspace_id/tasks but for GET /projects/project_id
body: <p>My query were these:</p>
  
  <p><a href="https://app.asana.com/api/1.0/tasks" rel="nofollow">https://app.asana.com/api/1.0/tasks</a>
  But I have this error instead: "Must specify exactly one of project, tag, or workspace"</p>
  
  <p>When I try out for the workspace with this:
  <a href="https://app.asana.com/api/1.0/workspaces/workspace_id/tasks" rel="nofollow">https://app.asana.com/api/1.0/workspaces/workspace_id/tasks</a>
  I have this error: "assignee: Missing input"</p>
  
  <p>However, I will get a list of tasks if i use the projects instead...</p>
  
  <p>Please advice.</p>