Could not parse as a valid SB2 or SB3 project.

[Noahigh]

When I tried to load a .sb3 file, I encountered the following error.

lib.min.js:181

{
    "validationError":"Could not parse as a valid SB2 or SB3 project.",
    "sb2Errors":[
        {
            "keyword":"required",
            "dataPath":"",
            "schemaPath":"#/required",
            "params":{
                "missingProperty":"objName"
            },
            "message":"should have required property 'objName'"
        }
    ],
    "sb3Errors":[
        {
            "keyword":"enum",
            "dataPath":".targets[1].isStage",
            "schemaPath":"sb3_definitions.json#/definitions/sprite/properties/isStage/enum",
            "params":{
                "allowedValues":[
                    false
                ]
            },
            "message":"should be equal to one of the allowed values"
        }
    ]
}

And I modify the isStage's value to 'false', it can be worked...

So... how to solve it