[SOLVED] I can not access to webmin via squid proxy

I can not access to webmin via squid proxy

I can not access to webmin via squid proxy.

I have squid proxy and webmin set up already.

I have hostname like following.

・squid proxy hostname
dev-proxy.example

・webmin hostname
dev-proxy.example:10000

I addedd following to squid.conf.

# Allow webmin
acl webmin_port port 10000
acl webmin url_regex "/etc/squid/webmin.acl"
http_access allow CONNECT webmin_port localnet
http_access allow CONNECT webmin_port localhost

/etc/squid/webmin.acl has following URL.

https://dev-proxy.example

I can access to webmin without squid proxy.

However, I can not access to webmin if squid proxy is set.

Do you have any suggestion for this?

My environment is as following.

Ubuntu 18.04.4 LTS 
SQUID Version 3.5.27
webmin version 1.941

Best regards,

Solution

I solve it myself. I added following.

acl SSL_ports port 10000