Spot\Mapper::save() must implement interface Spot\EntityInterface, array given,

[tablecell]

$mapper=$spot->mapper('Entity\User');

$user=['usernmae'=>'tom','password'=>'xxxx'];
$mapper->save($user);

Catchable fatal error: Argument 1 passed to Spot\Mapper::save() must implement interface Spot\EntityInterface, array given,

[tuupola]

You must give $mapper->save() an Entity\User object, not an array.