Unable to add repository to Maintenance tool under Ubuntu 14.04
I use Qt5.5 community version for linux x64 under Ubuntu 14.04. I wanted to add the official repositories to the MaintenanceTool (since there was none configured by default after the installation).
I tried to add this exact url http://download.qt.io/online/qt5/linux/x64/online_repository/ but I have an error stating that it was "unable to get the remote tree structure" (in french) with an error in the file InstallationLog.txt:
 Warning: Unsupported repository url skipped: "http://download.qt.io/online/qt5/linux/x64/online_repository"
 Invalid repository format. Repository skipped: " "http://download.qt.io/online/qt5/linux/x64/online_repository
 Impossible de récupérer l'arborescence distante : .
How to fix that?
Now I have repositories configured and everything is fine.