PermissionsEx - "an internal error occurred"

{
    "subjects": {
        "default": {
            "default": [
                {
                    "contexts": {
                        "srcip": "127.0.0.1"
                    },
                    "permissions-default": 1
                }
            ],
            "user": [
                {
                    "parents": [
                        "group:Default"
                    ]
                }
            ]
        },
        "group": {
            "Owner": [
                {
                    "permissions-default": 1,
                    "permissions": {
                        "essentialcmds.home.use": 1,
                        "essentialcmds.home.set": 1,
                        "essentialcmds.back.use": 1,
                        "essentialcmds.gamemode.use": 1,
                        "permissions.*": 1,
                        "essentialcmds.fly.use": 1
                    }
                }
            ],
            "Admin": [
                {
                    "permissions-default": 1,
                    "permissions": {
                        "essentialcmds.home.use": 1,
                        "essentialcmds.home.set": 1,
                        "essentialcmds.back.use": 1,
                        "essentialcmds.gamemode.use": 1,
                        "permissions.*": 1,
                        "essentialcmds.fly.use": 1
                    }
                }
            ],
            "Moderator": [
                {
                    "permissions-default": 1,
                    "permissions": {
                        "essentialcmds.home.use": 1,
                        "essentialcmds.home.set": 1,
                        "essentialcmds.back.use": 1,
                        "essentialcmds.fly.use": 1
                    }
                }
            ],
            "Default": [
                {
                    "permissions-default": 1,
                    "permissions": {
                        "essentialcmds.home.use": 1,
                        "essentialcmds.home.set": 1,
                        "essentialcmds.back.use": 1
                    }
                }
            ]
        },
        "user": {
            "9a5fb5d0-7f35-458d-b8b2-37ed02166c28": [
                {
                    "options": {
                        "name": "iKiza25"
                    },
                    "parents": [
                        "group:Owner"
                    ]
                }
            ]
        }
    },
    "schema-version": 4,
    "context-inheritance": {}
}