Installing GNS3VM in Ubuntu l On Mac M2 silicon l UTM

Gns3vm not compatible with amd sillicon m2, therefore using Ubuntu server to get the Gns3vm but it may be slow because it will be emulate

[chandrashekharable]

i am getting below error what command should i use here ?

E: The repository 'file:/cdrom focal Release' no longer has a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.

[so-vpkd]

thank you for your video sir !

I have a problem in gns3, I want to add windows 10 but I have in vnc "Guest has not initialized the display (yet)", how to solve this problem ?

[mahmoudsalem]

the gas server the color not green and not work can you help me where the error