【报Bug】使用FileReader读取文件显示“执行出错”

操作步骤：

plus.io.resolveLocalFileSystemURL("/storage/emulated/0/Download/QQ/test.json", function(entry) {
entry.file(function(file) {
let fileReader = new plus.io.FileReader();
fileReader.readAsText(file, 'utf-8');
fileReader.onerror = function(err) {
uni.showToast({
title: "读取文件失败",
icon: "none"
})
console.log("读取文件失败", err);
}
fileReader.onloadend = function(e) {
if (e.target.result && e.target.result.length !== 0) {
let importData = JSON.parse(e.target.result);
savePsdBatch(importData);
}
}
})
}, error => {
console.log("请求文件系统失败", error);
})

预期结果：

正确读取文件数据

实际结果：

{  
    "type": "error",  
    "bubbles": false,  
    "cancelBubble": false,  
    "cancelable": false,  
    "lengthComputable": false,  
    "loaded": 0,  
    "total": 0,  
    "target": {  
        "fileName": "/storage/emulated/0/Download/QQ/test.json",  
        "readyState": 2,  
        "result": null,  
        "error": {  
            "code": 10,  
            "message": "执行出错"  
        },  
        "onloadstart": null,  
        "onprogress": null,  
        "onload": null,  
        "onabort": null,  
        "onerror": "function() { [native code] }",  
        "onloadend": "function() { [native code] }"  
    }  
}