run
chmod +x ./tool/x86_64/mkexfatfs
and then try again.
Or you can run ./VentoyGUI.x86_64 to use the GUI version.
https://www.ventoy.net/en/doc_linux_gui.html
chmod +x ./tool/x86_64/mkexfatfs
and then try again.
Or you can run ./VentoyGUI.x86_64 to use the GUI version.
https://www.ventoy.net/en/doc_linux_gui.html