[Bugs] TestServer Failed

[andy89923]

=== RUN   TestServer
2024-10-29T03:10:16.286673406Z [INFO][UPF][BUFF] buff netlink server started
    server_test.go:169: not found
--- FAIL: TestServer (0.10s)
FAIL
FAIL    github.com/free5gc/go-upf/internal/forwarder/buffnetlink        0.112s
?       github.com/free5gc/go-upf/internal/report       [no test files]
?       github.com/free5gc/go-upf/pkg/factory   [no test files]
?       github.com/free5gc/go-upf/testtools/upftest     [no test files]

In file internal/forwarder/buffnetlink/server_test.go:func TestServer.