Debian 9 Stretch 64bit

[Hans Linde]

Trying to install XnViewMP-linux-x64.deb from your homepage.
The icon and the start-file in /usr7bin/xnview get installed, but it doesn work.
Nothing happens.
When I try to start from the Terminal, I get this result:
hans@hans-advent:~$ /usr/bin/xnview
/opt/XnView/XnView: error while loading shared libraries: libgstapp-0.10.so.0: cannot open shared object file: No such file or directory

[xnview]

you need to install gstreamer