给小程序上传代码，调用接口https://api.weixin.qq.com/wxa/commit?access_token=TOKEN时，响应时间很长，而且返回503错误

【请求地址】: https://api.weixin.qq.com/wxa/commit

【请求参数】：{“template_id”:1368,“user_version”:“S4.23.0.beta32”,“user_desc”:"",“ext_json”:"{\“extAppid\”:\“wx0890abb912ec2f69\”,\“extEnable\”:true,\“directCommit\”:false,\“ext\”:{\“appId\”:\“APP1339192735067803648\”,\“wechatAppId\”:\“wx0890abb912ec2f69\”,\“appName\”:\“慌的一米\”,\“appLogo\”:\“http://wx.qlogo.cn/mmopen/Xm4vR4jonteUOvxjZlTb4bkam5ZZ4CE90ibjGiaZkfXnmGfcMAsbPspXaKoX5icB4hG5TlibKyMWrfZPHq0Jy0RMUicVsDcUuPAnG/0\”,\“subscribeTemplate.new_message\”:\“z1BukB08SXXjoBJ0dyEbnoICGYguoc9tnPxK7q_tZGs\”,\“publishVersion\”:\“S4.23.0.beta32\”}}"}

【响应信息】：HTTP/1.1 503 Service Unavailable

Connection: close

Content-Length: 0

Content-Type: null;charset=UTF-8

Date: Wed, 13-May-2020 05:37:05 GMT