panic: unknown directive '''' on line 32, column 2

[AmShadows]

https://github.com/tufanbarisyildirim/gonginx/blob/master/examples/formatting/main.go
运行报错了
panic: unknown directive '''' on line 32, column 2

类似报错的还有
案例
location /aaa/ {
limit_rate 10M;
check_status;
}
报错unknown directive 'check_status' on line 256, column 17

案例
map $http_x_forwarded_for $clientRealIp
{
"" $remote_addr;
~^(?P[0-9.]+),?.*$ $firstAddr;
}
报错unknown directive '""' on line 2047, column 5

案例upstream www.abc.com{
server 1.2.3.4:8080;
check interval=5000 rise=1 fall=2 timeout=1000;
}

报错unknown directive 'check' on line 481, column 2