Just replace your /etc/apt/sources.list file with the attached file - should fix everything. For some reason, you seemed to have lost part of a commented out line leaving "t is" and apt didn't know how to handle that.
Just replace your /etc/apt/ sources. list file with the attached file - should fix everything. For some reason, you seemed to have lost part of a commented out line leaving "t is" and apt didn't know how to handle that.