Error: Unsupported schema version (v4 only)

I installed “json-schema-faker” (and then grunt and grunt-cli)

and I took a default schema from this site: https://jsonschema.net/ ; and put in the following file:

`var jsf = require("json-schema-faker");

const schema = {
    "$schema": "https://json-schema.org/draft/2019-09/schema",
    "$id": "http://example.com/example.json",
    "title": "Root Schema",
    "type": "object",
    "default": {},
    "required": [
        "checked",
        "dimensions",
        "id",
        "name",
        "price",
        "tags"
    ],
    "properties": {
        "checked": {
            "title": "The checked Schema",
            "type": "boolean",
            "default": false
        },
        "dimensions": {
            "title": "The dimensions Schema",
            "type": "object",
            "default": {},
            "required": [
                "width",
                "height"
            ],
            "properties": {
                "width": {
                    "title": "The width Schema",
                    "type": "integer",
                    "default": 0
                },
                "height": {
                    "title": "The height Schema",
                    "type": "integer",
                    "default": 0
                }
            }
        },
        "id": {
            "title": "The id Schema",
            "type": "integer",
            "default": 0
        },
        "name": {
            "title": "The name Schema",
            "type": "string",
            "default": ""
        },
        "price": {
            "title": "The price Schema",
            "type": "number",
            "default": 0.0
        },
        "tags": {
            "title": "The tags Schema",
            "type": "array",
            "default": [],
            "items": {
                "title": "A Schema",
                "type": "string"
            }
        }
    }
}
  

var sample = jsf(schema);
console.log(sample);`

However when I execute it (node filename.js), I get an error:
Error: Unsupported schema version (v4 only)
at Object.module.exports [as normalizeSchema] (C:UsersnillaDesktopjson-fakernode_modulesdereflibutilnormalize-schema.js:53:11)

Generally it works and I guess even worked. But after I installed grunt or grunt-cli or grunt-init, it stopped working and I don’t know how to change it to v4. On the web-site mentioned above it’s possible to change version to “draft 4” or “draft 7”, but I did not help.

Do you know how to change json schema to v4?

I executed the file with “node filename.js” and a json should have been printed to the console, but now it gives me the error.