微信跳转小程序后，${query}的参数只接收到了第一个参数preOrderNo，&后面的都丢了，已经做了encode，请问是为什么呢？

let param = `jumpUrl=${urlDomain}/1MNP/paycodefe/#/pages/order/index?preOrderNo=${preOrderNo}&outerOrderNo=${outerOrderNo}&wxAppId=${APPID_1MNP}`;
const query = `${encodeURIComponent(param)}`；
window.location.href = `weixin://dl/business/?appid=${APPID_1MNP}&path=pages/web-view/index&envVersion=${ENV_VERSION}&query=${query}`;