previewMedia:fail maximum length of sources is 50"
https://developers.weixin.qq.com/miniprogram/dev/api/media/image/wx.previewImage.html
previewMedia:fail maximum length of sources is 50"
预览图片长度超出50 报错!!!
https://developers.weixin.qq.com/miniprogram/dev/api/media/image/wx.previewImage.html
previewMedia:fail maximum length of sources is 50"
预览图片长度超出50 报错!!!