JSON Schema Validation validate array items not working - json

Question

Here is the thing I'm trying to validate:
[REMOVED AFTER EDIT - PLEASE SEE EDIT BELOW FOR UP TO DATE CODE]
This should fail because only the item that should be acceptable here is "merchants" - but the validation doesn't fail. It passes.
I've can't work this out. I've tried a few approaches and it's got me nowhere.
What is wrong here?
---------------------- EDIT ----------------------------
I've been asked to provide more code. Here is the payload I need to validate. It's in PHP.
$payload = (object) [];
$payload->query_string = (object) [];
$payload->query_string->include = (object) [
"merchant_channel",
"merchant",
];
Here is the line that will run the validator:
$this->validator->validate(
$payload,
['$ref' => 'file://Schemas/the-json-file.json']
);
And here is the file that I'm running the validator against:
{
"type": "object",
"properties": {
"query_string": {
"type": "object",
"properties": {
"include": {
"type": "object",
"properties": {
"values": {
"type": "array",
"items": {
"allOf": [
{
"type": "string",
"enum": [
"language"
]
}
]
}
}
}
}
}
}
}
}
I'm using this package:
https://github.com/justinrainbow/json-schema
This package is quite simply....
A PHP Implementation for validating JSON Structures against a given Schema.
You shouldn't have to know PHP to able to answer my original question which is specific to JSON Schema Validation!
Please don't comment/answer saying something like "You've missed a quote" or "You've missed a closing bracket". Obviously I've had to cut this code down so I can post it on Stack Overflow.

Answer 1

It lacks starting and ending curly braces.