微信消息php 44004,关于发送微信客服消息报44004错误的解决办法

错误如下：

{"errcode":44004,"errmsg":"empty content hint: [xCzlfa0209ge25]"}

发送的代码如下：

def POST(self):

data = web.data()

reg = ''''''

reg2 = ''

reg3 = '(\d+)'

reg4 = ''

reg5 = ''

reg6 = '(\d+)'

fromusers = re.compile(reg2).findall(data)[0]

MsgType = re.compile(reg4).findall(data)[0]

Content = re.compile(reg5).findall(data)[0]

username, city = self.get_userinfo(fromusers)

if fromusers != 'owV3nvshcqIgwflEMlikiXdwaP7M':

self.leandbs.save_userinfo(fromusers)

dic = {"touser":"owV3nvshcqIgwflEMlikiXdwaP7M","msgtype":"text","text":{"content":'【%s %s】：%s' % (city, username ,Content)}}

else:

fromuser = self.leandbs.select_userinfo('key','1','openid')

dic = {"touser":fromuser,"msgtype":"text","text":{"content":Content}}

dics = json.dumps(dic,ensure_ascii=False)

dics = dics.encode('utf-8')

url = 'https://api.weixin.qq.com/cgi-bin/message/custom/send?access_token=%s' % self.get_token()

result = requests.post(url,data=dics)

print result.content

return 'success'

如果不加dics = dics.encode('utf-8')这一句转换，则发送中文消息时只能发一个字。超过就会包文本消息为空的错误。