Cast zero param array to object.

[adjenks]

Please see:
metabase/metabase#11101
I haven't tried your lavavel example, but I would suspect that this line does not work:
https://github.com/metabase/embedding-reference-apps/blob/ceb75b6886cf637a88c917b2f3b7e57fdba0ec4e/laravel/embedded_analytics/routes/web.php#L49-L50
It should generate the same error that I was receiving in the issue cited above.