ValueError: Could not convert return value of the view callable function cornice.pyramidhook.handle_exceptions into a response object.
File "/home/mathieu/Code/daybed/daybed/daybed/templates/home.mako", line 8, in render_body
<h1>Welcome on Daybed, ${user['name']}</h1>
TypeError: 'NoneType' object has no attribute '__getitem__'