Installation fails from live graphical installer

[Defaultusername123]

I get the following message

https://ibb.co/HHf6vJc

Please help

[Head_on_a_Stick]

Please provide the exact URL from which you obtained the ISO image used when you saw this error.

[Defaultusername123]

https://cdimage.debian.org/debian-cd/cu ... so-hybrid/

[Head_on_a_Stick]

Try 'apt update' before running Calamares (if that's what you're using) or use the installer available from the bootloader screen. If they don't work then try the netinstall image and perhaps report this as a bug.