I received a problem with my graphical network simulator gns3
Hi,
I received a problem with my graphical network simulator gns3. A screenshot of the message is as below. I do not understand the message. How can I fix it? Please help.
Untrusted application launcher
The application launcher "gns3.desktop" has not been marked as trusted. If you do not know the source of this file, launching it may be unsafe.








