我这边是接入了腾讯的云智服客服机器人功能，有一些关键字提问，系统会显示“该公众号提供的服务出现故障,请稍后再试”

查询接口日志显示解密后内容为空，如下：

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类型

文本text

发生时间

2020-3-2 10:57:12

用户openid

o8I2s5jksb6oplCM3TgXxkOnTbj4

第三方平台名称

腾讯云智服

请求url

https://yzf.qq.com/wxcommon/wx9698664349c7e3ee/Callback?signature=0e142480a03ed792a47613634db200ac5d9c7e9c&timestamp=1583117831&nonce=1842203885&openid=o8I2s5jksb6oplCM3TgXxkOnTbj4&encrypt_type=aes&msg_signature=f463ecb5bf4da8afcabda06a6b1ddb7d710165d3

第三方URL对应IP

61.151.207.38

请求表单数据

<xml> <ToUserName><![CDATA[gh_b817502b6829]]></ToUserName> <Encrypt><![CDATA[ThjpW+UqnElbbZRTlZJMNKDeMfPLZTDGSv0VX52NfngBl9WsYMZqvYhbl2zz8nFao2TTHujgJ3Nh3m7vhkRfEgvHzWxiTz+t1Za3WaCP5IHo9SkNlzgpkjqjWevnrAiuPC3bzNdkslJjoiRLEvG+LlKb2j2dB6K6KlBqOaRxYs0dACYVIfXTeI8ULF4ZWfDbUnQShHmIdl3aPOWac1LFTilWvlECzbND00n66SkM/DWy8hqpxhByeMlLwUSZSvDak9x4pifxU0OC5e2tWAe/B4/SE+hYOVQJh88HP/xnSYmJCwvOOY/blFoqDTgKv1WIJmqJcRsB8FL52F9HoIZg64U6KpGCW1dMuT2VwWU4edbHFb8K3/RLVIApnGtbQAwyGP7sxcgafUnaIuhuGl3aFzYHDf6tZI2gdKEMj0zDPK4=]]></Encrypt> </xml>

请求表单数据（解密后）

<xml><ToUserName><![CDATA[gh_b817502b6829]]></ToUserName> <FromUserName><![CDATA[o8I2s5jksb6oplCM3TgXxkOnTbj4]]></FromUserName> <CreateTime>1583117831</CreateTime> <MsgType><![CDATA[text]]></MsgType> <Content><![CDATA[网商]]></Content> <MsgId>22664796393646919</MsgId> </xml>

被动回复内容

<xml><TimeStamp>1583117832</TimeStamp><Encrypt>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

被动回复内容（解密后）

无

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然后我把自动回复的推荐问题的字数减少了，就正常了，如下：

那貌似就是系统对自动回复的字数有限制啊？如果有的话，具体的限制是多少呢？