Hello , sorry if am posting in wrong forum i am a bit sleepy

I have a problem with lastest patch download

I start launcher , it starts downloading some stuff , finishes then closes and this error pops


"Blizzard Updater was unable to start up.
The file "Data\enGB\base-enGB.MPQ" could not be found. If this problem persists, you may be able to solve it by uninstalling and then reinstalling the game. If you are unable to correct this problem, please contact Blizzard Technical Support."

Any fix for this problem ? Thanks in advance