代币支付中一直出错，INVALID_BUY_QUANTITY 错误的根本原因是 微信后台缺少代币档位配置。是这样的吗？

Error: not node js file system!path:/saaa_config.json; go __invokeHandler__ readFile worker? false

billing.js:644 [虚拟支付] 支付失败: {errMsg: "requestVirtualPayment:fail INVALID_BUY_QUANTITY", errno: -15001, errCode: -15001}errCode: -15001errMsg: "requestVirtualPayment:fail INVALID_BUY_QUANTITY"errno: -15001constructor: (...)hasOwnProperty: (...)isPrototypeOf: (...)propertyIsEnumerable: (...)toLocaleString: (...)toString: (...)valueOf: (...)__defineGetter__: (...)__defineSetter__: (...)__lookupGetter__: (...)__lookupSetter__: (...)[[Prototype]]: Object