Log directory

[ViroManchego]

Installed default  blesta on a folder (/blesta) ,
   log directory  is  placed on root  by default (/logs_blesta) not taking into account install directory , 
      by default should be (/blesta/logs_blesta )

[Paul]

I'm not sure I understand, what is the full path to your document root, where is Blesta installed, and where as the logs_blesta directory created?

logs_blesta should always be created one level above document root.