missing port in address

[xuyf1001]

error are as follows:

Build context (go=go1.10.3，user=rot@981cde178ac4，date=20180707-14:39:50)ce="kafka exporter.go:475INFO Done Init Clients listen tcp: address 9308: missing port in addresssource="kafka exporter.go:500.

kafka exporter started by command：./kafka_exporter --kafka.server=xxx:9092 --kafka.version=1.1.0 --sasl.enabled --sasl.username=admin --sasl.password=admin --log.level=info --web.listen-address=9308

but faced an error,how could I do?

[zhangdong1015]

you should use --web.listen-address=:9308,it not a port