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Processing triggers for update-notifier-common (3.168.2) ... flashplugin-installer: processing... flashplugin-installer: downloading http://archive.canonical.com/pool/partner/a/adobe-flashplugin/adobe-flashplugin_20161213.1.orig.tar.gz 0% [Working] Get:1 http://archive.canonical.com/pool/partner/a/adobe-flashplugin/adobe-flashplugin_20161213.1.orig.tar.gz [31.8 MB] 0% [1 /var/lib/update-notifier/package-data-downloads/partial/adobe-flashplugin 0% [1 /var/lib/update-notifier/package-data-downloads/partial/adobe-flashplugin 2% [1 /var/lib/update-notifier/package-data-downloads/partial/adobe-flashplugin 4% [1 /var/lib/update-notifier/package-data-downloads/partial/adobe-flashplugin 7% [1 /var/lib/update-notifier/package-data-downloads/partial/adobe-flashplugin 10% [1 /var/lib/update-notifier/package-data-downloads/partial/adobe-flashplugi 12% [1 /var/lib/update-notifier/package-data-downloads/partial/adobe-flashplugi 15% [1 /var/lib/update-notifier/package-data-downloads/partial/adobe-flashplugi 18% [1 /var/lib/update-notifier/package-data-downloads/partial/adobe-flashplugi 21% [1 /var/lib/update-notifier/package-data-downloads/partial/adobe-flashplugi 23% [1 /var/lib/update-notifier/package-data-downloads/partial/adobe-flashplugi 27% [1 /var/lib/update-notifier/package-data-downloads/partial/adobe-flashplugi 29% [1 /var/lib/update-notifier/package-data-downloads/partial /adobe-flashplugi 32% [1 /var/lib/update-notifier/package-data-downloads/partial/adobe-flashplugi 35% [1 /var/lib/update-notifier/package-data-downloads/partial/adobe-flashplugi 37% [1 /var/lib/update-notifier/package-data-downloads/partial/adobe-flashplugi 40% [1 /var/lib/update-notifier/package-data-downloads/partial/adobe-flashplugi 43% [1 /var/lib/update-notifier/package-data-downloads/partial/adobe-flashplugi 46% [1 /var/lib/update-notifier/package-data-downloads/partial/adobe-flashplugi 49% [1 /var/lib/update-notifier/package-data-downloads/partial/adobe-flashplugi 52% [1 /var/lib/update-notifier/package-data-downloads/partial/adobe-flashplugi 54% [1 /var/lib/update-notifier/package-data-downloads/partial/adobe-flashplugi 57% [1 /var/lib/update-notifier/package-data-downloads/partial/adobe-flashplugi 60% [1 /var/lib/update-notifier/package-data-downloads/partial/adobe-flashplugi 63% [1 /var/lib/update-notifier/package-data-downloads/partial/adobe-flashplugi 66% [1 /var/lib/update-notifier/package-data- downloads/partial/adobe-flashplugi 69% [1 /var/lib/update-notifier/package-data-downloads/partial/adobe-flashplugi 72% [1 /var/lib/update-notifier/package-data-downloads/partial/adobe-flashplugi 75% [1 /var/lib/update-notifier/package-data-downloads/partial/adobe-flashplugi 78% [1 /var/lib/update-notifier/package-data-downloads/partial/adobe-flashplugi 80% [1 /var/lib/update-notifier/package-data-downloads/partial/adobe-flashplugi 80% [1 /var/lib/update-notifier/package-data-downloads/partial/adobe-flashplugi 100% [Working] 2,227 kB/s 0s Fetched 31.8 MB in 16s (1,944 kB/s) W: Can't drop privileges for downloading as file '/var/lib/update-notifier/package-data-downloads/partial/adobe-flashplugin_20161213.1.orig.tar.gz' couldn't be accessed by user '_apt'. - pkgAcquire::Run (13: Permission denied) Installing from local file /var/lib/update-notifier/package-data-downloads/partial/adobe-flashplugin_20161213.1.orig.tar.gz Flash Plugin installed. Processing triggers for dbus (1.10.6-1ubuntu3.1) ... Setting up grub-efi-amd64-signed (1.66.2+2.02~beta2-36ubuntu3.2) ... grub-install: error: /usr/lib/grub/i386-pc/modinfo.sh doesn't exist. Please specify --target or --directory. dpkg: error processing package grub-efi-amd64-signed (--configure): subprocess installed post-installation script returned error exit status 1