Mismatch between the code and the "whatsmeow" library.

[MarianoDAcosta]

It seems that there's a mismatch between the code and the "whatsmeow" library. The library might have undergone changes since the code was written.
go run main.go

command-line-arguments

./main.go:61:61: cannot use "" (untyped string constant) as *"go.mau.fi/whatsmeow/binary/proto".Message value in argument to mycli.WAClient.SendMessage
./main.go:61:65: cannot use response (variable of type *"go.mau.fi/whatsmeow/binary/proto".Message) as whatsmeow.SendRequestExtra value in argument to mycli.WAClient.SendMessage