Bug SocketException: Address already in use System

Hi,

I am having some trouble with his when hosting a server and client through using mirror for unity. It only started to happen when I had an update or SDK for android on unity although I could be wrong.
Nothing has really changed on my part so I am confused as to what is causing it.

SocketException: Address already in use
System.Net.Sockets.Socket.Bind (System.Net.EndPoint localEP) (at <398d6327050c4a25a0d432db4cd6a536>:0)

That is what I get.

SocketException: Address already in use
System.Net.Sockets.Socket.Bind (System.Net.EndPoint localEP) (at <398d6327050c4a25a0d432db4cd6a536>:0)
kcp2k.KcpServer.Start (System.UInt16 port) (at Assets/Mirror/Runtime/Transports/KCP/kcp2k/highlevel/KcpServer.cs:141)
kcp2k.KcpTransport.ServerStart () (at Assets/Mirror/Runtime/Transports/KCP/MirrorTransport/KcpTransport.cs:209)
Mirror.NetworkServer.Listen (System.Int32 maxConns) (at Assets/Mirror/Runtime/NetworkServer.cs:129)
Mirror.NetworkManager.SetupServer () (at Assets/Mirror/Runtime/NetworkManager.cs:253)
Mirror.NetworkManager.StartHost () (at Assets/Mirror/Runtime/NetworkManager.cs:414)
Mirror.NetworkManagerHUD.StartButtons () (at Assets/Mirror/Runtime/NetworkManagerHUD.cs:63)
Mirror.NetworkManagerHUD.OnGUI () (at Assets/Mirror/Runtime/NetworkManagerHUD.cs:29)

And then above is what it tells me broken down but it's meaningless to me who is new to coding etc. Especially as I have done nothing to cause this.

 

When reinstalling the software it gets stuck on this part.