failed to parse proxy web, err: custom_domains and subdomain should set at least one of them

[Win-X]

When I followed "Visit your web service in LAN by custom domains", an error is reported by executing "./frpc -c ./frpc.ini" locally。
"failed to parse proxy web, err: custom_domains and subdomain should set at least one of them"
but my frpc.ini is
"[common]
server_addr = x.x.x.x
server_port = 7000
auth_token = 123

[web]
type = https
local_port = 80
"
then I add " custom_domains = test.example.com" in frpc.ini
and command executed successfully
but I can't access my Intranet service