[Gambas-user] daily PPA for ubuntu vivid not found

[corradoventu at ...69...]

on my ubuntu vivid i added in sources.list the lines suggested in:https://launchpad.net/~gambas-team/+archive/ubuntu/gambas-daily
deb http://ppa.launchpad.net/gambas-team/gambas-daily/ubuntu vivid maindeb-src http://ppa.launchpad.net/gambas-team/gambas-daily/ubuntu vivid main i also added the key:sudo apt-key adv --recv-keys --keyserver keyserver.ubuntu.com 50B027516CAEE58D

but from apt-get updtate i have messages:W: Failed to fetch http://ppa.launchpad.net/gambas-team/gambas3/ubuntu/dists/vivid/main/binary-amd64/Packages  404  Not Found
W: Failed to fetch http://ppa.launchpad.net/gambas-team/gambas3/ubuntu/dists/vivid/main/binary-i386/Packages  404  Not Found
may you help me?thankscorrado