ubuntu系统报错packagearchitecture(amd64)doesnotmatchsystem(arm64)

jide@jide-rk3399:~$ sudo dpkg -i emqttd-ubuntu16.04-v2.3.8_amd64.deb
sudo: unable to resolve host jide-rk3399: Connection timed out
dpkg: error processing archive emqttd-ubuntu16.04-v2.3.8_amd64.deb (--install):
package architecture (amd64) does not match system (arm64)
Errors were encountered while processing:
emqttd-ubuntu16.04-v2.3.8_amd64.deb
解决办法：
sudo dpkg --add-architecture amd64