Не устанавливаются обновления Manjaro Linux 15.12 KDE

Total Installed Size: 4441.99 MiB
Net Upgrade Size: 77.06 MiB

:: Proceed with installation? [Y/n] y
(576/576) checking keys in keyring [############################] 100%
warning: Public keyring not found; have you run 'pacman-key --init'?
downloading required keys…
error: key «F99FFE0FEAE999BD» could not be looked up remotely
error: key «94657AB20F2A092B» could not be looked up remotely
error: key «E62F853100F0D0F0» could not be looked up remotely
error: key «A5E9288C4FA415FA» could not be looked up remotely
error: key «3C1C876030B65FE2» could not be looked up remotely
error: key «B02854ED753E0F1F» could not be looked up remotely
error: key «1EB2638FF56C0C53» could not be looked up remotely
error: key «976AC6FA3B94FA10» could not be looked up remotely
error: key «BBE43771487328A9» could not be looked up remotely
error: key «771DF6627EDF681F» could not be looked up remotely
error: key «6D1655C14CE1C13E» could not be looked up remotely
error: key «7F2D434B9741E8AC» could not be looked up remotely
error: key «786C63F330D7CB92» could not be looked up remotely
error: key «51E8B148A9999C34» could not be looked up remotely
error: key «2C089F09AC97B894» could not be looked up remotely
error: key «CAA6A59611C7F07E» could not be looked up remotely
error: key «06096A6AD1CEDDAC» could not be looked up remotely
error: key «7A4E76095D8A52E4» could not be looked up remotely
error: key «AFF5D95098BC6FF5» could not be looked up remotely
error: key «8DB9F8C18DF53602» could not be looked up remotely
error: key «DAD3B211663CA268» could not be looked up remotely
error: key «E711306E3C4F88BC» could not be looked up remotely
error: key «5C2E46A0F53A76ED» could not be looked up remotely
error: key «E613C09CB4440678» could not be looked up remotely
error: key «DA6426DD215B37AD» could not be looked up remotely
error: key «39E4B877E62EB915» could not be looked up remotely
error: key «DB323392796CA067» could not be looked up remotely
error: key «396E3E25BAB142C1» could not be looked up remotely
error: key «A6234074498E9CEE» could not be looked up remotely
error: key «62443D89B35859F8» could not be looked up remotely
error: key «C06086337C50773E» could not be looked up remotely
error: key «8934292D604F8BA2» could not be looked up remotely
error: key «426991CD8406FFF3» could not be looked up remotely
error: key «9BDCF497A4BBCC7F» could not be looked up remotely
error: key «65C110C1EA433FC7» could not be looked up remotely
error: required key missing from keyring
error: failed to commit transaction (unexpected error)
Errors occurred, no packages were upgraded.

что делать? помогите.