下载时出现下列错误在终端输入sudo -- sh -c "echo ‘117.18.237.29   ocsp.digicert.com‘ >> /etc/hosts"，回车，密码就是当前电脑的密码

[!] Error installing ZBarSDK
[!] Attempt to read non existent folder `/Users/wallace/Desktop/HDVG_demo1/Pods/ZBarSDK`.

pod 常见错误