The repository 'http://ppa.launchpad.net/gnome-terminator/ppa/ubuntu yakkety Release' does not have a Release file [duplicate]
- Open
Software & Updates
,Other Software
tab. - find the PPA definition that contains "gnome-terminator"
- select it and click
Edit
- change the
Distribution
field from yakkety to xenial - save the changes
- update the software database when prompted
- problem solved
Source: http://ppa.launchpad.net/gnome-terminator/ppa/ubuntu/dists/