Please, explain how can I fix that entry? Also "Software & Updates" application is not working. It doesn't respond to my attempts to open it.
This happened after I uninstalled some third-party applications. Maybe I've done something wrong during that process.
sudo apt-get update
E: Malformed entry 1 in sources file /etc/apt/sources.list.d/third-party.sources (URI parse) E: The list of sources could not be read.
