metadatabag - laravel 5 I don't know where the error came from

Question

[2015-11-06 17:03:41] local.ERROR: exception 'ErrorException' with message 'Argument 1 passed to Symfony\Component\HttpFoundation\Session\Storage\MetadataBag::initialize() must be of the type array...

世界只因有你 · Answer

I think. . This error can be debugged directly into the framework to see how it occurs. .

巴扎黑 · Answer

must be of the type array, null given,

A null value was passed when using with?