Cosmos SDK Blog tutorial - build problem

Hey guy, trying to learn about cosmoms and following the blog tutorial

when i build i get this problem

cannot build app:

github.com/keybase/go-keychain

cgo-gcc-prolog:203:11: warning: ‘SecTrustedApplicationCreateFromPath’ is deprecated: first deprecated in macOS 10.15 - No longer supported [-Wdeprecated-declarations]

/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Security.framework/Headers/SecTrustedApplication.h:59:10: note: ‘SecTrustedApplicationCreateFromPath’ has been explicitly marked deprecated here

github.com/krippilippa/blog/x/blog/types

…/…/x/blog/types/codec.go:11:24: undefined: MsgCreatePost

…/…/x/blog/types/codec.go:18:4: undefined: MsgCreatePost

…/…/x/blog/types/messages_post.go:8:18: undefined: MsgCreatePost

…/…/x/blog/types/messages_post.go:10:67: undefined: MsgCreatePost

…/…/x/blog/types/messages_post.go:11:10: undefined: MsgCreatePost

…/…/x/blog/types/messages_post.go:19:11: undefined: MsgCreatePost

…/…/x/blog/types/messages_post.go:24:11: undefined: MsgCreatePost

…/…/x/blog/types/messages_post.go:29:12: undefined: MsgCreatePost

…/…/x/blog/types/messages_post.go:38:12: undefined: MsgCreatePost

…/…/x/blog/types/messages_post.go:44:12: undefined: MsgCreatePost

…/…/x/blog/types/messages_post.go:11:10: too many errors

What to do? do i need to update mac OS? seems a bit overkill…