Http request configuration url must be a string or a $sce trusted object. Received: {0}
This error occurs when the request configuration parameter passed to the $http service is not a valid object.
$http expects a single parameter, the request configuration object, but received a parameter that was not an object or did not contain valid properties.
The error message should provide additional context such as the actual value of the parameter that was received.
If you passed a string parameter, perhaps you meant to call one of the shorthand methods on $http such as $http.get(…), etc.
To resolve this error, make sure you pass a valid request configuration object to $http.
For more information, see the $http service API documentation.