Copied and pasted the ppa and the install command on the terminal, but it says that there isn't a package with nor the name solarus or solarus editor D: .
Is this a Lubuntu problem (even with the correct ppa)?

Copied and pasted the ppa and the install command on the terminal, but it says that there isn't a package with nor the name solarus or solarus editor D: .
Is this a Lubuntu problem (even with the correct ppa)?