Hello, Please edit your sources.list to make it correctly.
If you don't know how to edit, please do by following step:
1. Open your terminal 2. run this command:
sudo gedit /etc/apt/sources.list.d/ubuntu-tweak-stable.list
3. Check the line 15 and correct it.
Hello, Please edit your sources.list to make it correctly.
If you don't know how to edit, please do by following step:
1. Open your terminal
2. run this command:
sudo gedit /etc/apt/ sources. list.d/ ubuntu- tweak-stable. list
3. Check the line 15 and correct it.