Help me with the error please. Here is the link for boot repair report.
Did you try
sudo update-grub? Your Windows isn't showing in your grub.cfg file:
GRUB_DEFAULT=0 GRUB_TIMEOUT_STYLE=hidden GRUB_TIMEOUT=0 GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian` GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" GRUB_CMDLINE_LINUX=""
Also, type this if that didn't work: in terminal>
sudo grub-mkconfig sudo update-grub