error when running the basic helloworld about dubbo-go-samples HOT 2 CLOSED

i,ll running zookeeper as docker-compose and running the basic helloworld demo.i donn`t edit any config file and just do anything as docs said.The server can running success but when i seed siginal and rerun the go-server then execute error.When i wana running go-client then said "providerConfig is nil!" and go-client exit. I'll check zookeeper and found provider was success registry to zk and consumer wasn't success registry. I check "dist/linux_amd64/release/go-client.log" found some param was set null,contains:
?app.version=0.0.1&application=UserInfoClient&async=false&bean.name=UserProvider
&cluster=failover&environment=dev&generic=false
&group=
&interface=org.apache.dubbo.UserProvider
&ip=x.x.x.x
&loadbalance=
&methods.GetUser.loadbalance=
&methods.GetUser.retries=3
&methods.GetUser.sticky=false
&module=dubbo-go user-info client
&name=UserInfoClient&organization=dubbo.io
&owner=
&pid=11218&protocol=dubbo
&provided-by=
&reference.filter=cshutdown
&registry.role=0&release=dubbo-golang-1.3.0
&retries=
&side=consumer
&sticky=false&timestamp=1607913567
&version=
then i fix some param but another is still null and running exit,can everybody fix that problem?
i run at go-1.13.12
dubbo-go-samples 1.5.5 at 2020/12/14

• If you start go-client, console print providerConfig is nil! is normal. After all, consumer doesn't need that config.
• Consumer will shut down after call Provider, you can check the code as below
  

  dubbo-go-samples/helloworld/go-client/cmd/client.go

  Line 59 in 7a992b8

  if err != nil {

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@zouyx 3q for your answer，i‘ll check this from source code

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