netstat command on WSL doesn't give any messages

$ netstat -nap
(No info could be read for "-p": geteuid()=1000 but you should be root.)
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
Active UNIX domain sockets (servers and established)
Proto RefCnt Flags       Type       State         I-Node   PID/Program name     Path

nestat command gives no information about ports are using. For example, I'm running redis-server on this PC but it is not displayed here.

How to I fix this? Linux distro is Microsoft WSL Ubuntu 18.04.

/proc/net/tcp is not implemented for WSL, hence accessing these networking proc interfaces does not work. The netstat or ss commands access these and, since they are not implemented, they do not work in WSL on Ubuntu.

From Windows PowerShell, running the command Get-NetTCPConnection gives the equivalent netstat output