Thanks a lot to the entire ubuntu team...
my problem has been resolved thanks to the feedback infirmation, I tried using
DVD media in slow speed write mode, and it works ...
This is not a system bug but this is an error from a bad device, this can occur
on HDD, DVD Drive, DVD Media, Usb Flash
Public bug reported:
i have do clean install but still error
ProblemType: Bug
DistroRelease: Ubuntu 19.04
Package: ubiquity 19.04.9
ProcVersionSignature: Ubuntu 5.0.0-13.14-generic 5.0.6
Uname: Linux 5.0.0-13-generic x86_64
ApportVersion: 2.20.10-0ubuntu27
Architecture: amd64
CasperVersion:
