被控端报错panic: runtime error: invalid memory address or nil pointer dereference

[bingotl]

命令
/etc/profile;/root/ip_table CriiJQxxxx 10.123.111.102 http://ip:10080/api

报错：
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x40 pc=0x7187e1]

goroutine 1 [running]:
main.getRules(0x0, 0x0, 0x0, 0x0, 0x0)
/Users/mrjun/Golang/main.go:25 +0xd1
main.main()
/Users/mrjun/Golang/main.go:214 +0x149

被控端是nat，ip是内网ip没错，命令应该也没问题，因为在另外一台国外vps上测试返回：清理规则，但是这台nat不行。

已经执行更新yum install ca-certificates -y

麻烦帮看看，谢谢！