remove : '/etc/apt/sources.list.d/passenger.list'
WARNING:root:could not open file '/etc/apt/sources.list.d/passenger.list'
permissions related problem:
sudo chmod go=r /etc/apt/sources.list.d/passenger.list
WARNING:root:could not open file '/etc/apt/sources.list.d/passenger.list'
permissions related problem:
sudo chmod go=r /etc/apt/sources.list.d/passenger.list