v install ui error

[qiuapeng921]

ui is missing a manifest, plPS D:\cppApp\vdemo> v install ui
Scanning ui...
Error 10057 sending data to server (1)
Error performing handshake
Error 10057 sending data to server (1)
Error performing handshake
Error 10057 sending data to server (1)
Error performing handshake
Error 10057 sending data to server (1)
Error performing handshake
Error 10057 sending data to server (1)
Error performing handshake
warning: ui is missing a manifest file.
details: Help to ensure future-compatibility by adding a v.mod file or opening an issue at:
https://github.com/vlang/ui/issues/new?title=Missing%20Manifest&body=ui%20is%20missing%20a%20manifest,%20please%20consider%20adding%20a%20v.mod%20file%20with%20the%20modules%20metadata.
Updating module ui in %USERPROFILE%\.vmodules\ui...
Skipped module ui. Already up to date.
ease consider adding a v.mod file with the modules metadata