...
Setting up memtest86+ (6.20-2) ...
Sourcing file `/etc/default/grub'
Sourcing file `/etc/default/grub.d/init-select.cfg'
Generating grub configuration file ...
/etc/grub.d/10_linux: 1: version_find_latest: not found
...
even if the error was in memtest86+ configure it seems relared to grub because failed on /etc/grub.d/10_linux and /etc/grub.d/20_memtest86+ (of memtest86+) is not even reached
from log in attachments:
... grub.d/ init-select. cfg' d/10_linux: 1: version_ find_latest: not found
Setting up memtest86+ (6.20-2) ...
Sourcing file `/etc/default/grub'
Sourcing file `/etc/default/
Generating grub configuration file ...
/etc/grub.
...
even if the error was in memtest86+ configure it seems relared to grub because failed on /etc/grub. d/10_linux and /etc/grub. d/20_memtest86+ (of memtest86+) is not even reached