Hello.
Step 1: Edit the file
sudo nano  /etc/apt/sources.list
Step 2 paste this:
deb-src http://packages.deepin.com/deepin unstable main contrib non-free
deb [by-hash=force] http://packages.deepin.com/deepin unstable main contrib non-free

Step 3  comment the others lines by #:

Step 4 Save de file

Step 5:
sudo apt-get update && sudo apt-get install apt lastore-daemon libapt-pkg5.0 -y && sudo apt-get dist-upgrade -y

Try and comment.