I found the following notes which may explain what caused this: I installed pdftk per below (included the messages which were received and my response, left out some usual context as im typing this on mobile)
sudo apt-get install pdftk You might want to run 'apt--fix-broken install' to correct these. The following packages have unmet dependencies: cryptsetup-run : depends: cryptsetup-bin (>=2:1.6.0) but it is not going to be installed pdftk: depends: pdftk-java but it is not going to be installed E: unmet dependencies. Try 'apt --fix-broken install' with no packages (or specify a solution). so i ran sudo apt --fix-broken install returned: The following additional pakcages will be installed: cryptsetup-bin The following NEW packages will be installed cryptsetup-bin 0 upgraded, 1 newly installed, 0 to remove and 46 not upgraded. Need to get 303Kb of archives. After this operation 1,514kB of additional disk space will be used. do you want to continue? Y Get:1 downloaded /debian buster/main amd64/cryptsetup-bin (cryptsetup-bin_2%3a2.1.0-5+deb10u2_amd64.deb ... unpacked... set up.... processing triggers for libc-bin (2.28-10)... Processing triggers for man-db (2.8.5-2)... processing triggers for initramfs-tools (0.133+deb10u1)... Update-initramfs: Generating /boot/initrd.img-4.19.0-9-amd64 Then my notes took me into installing pdftk, which included installing and configuring pdftk-java and pdftk_2.02-5_amd64.deb and process triggers for man-db. still given the above im rather novice and unsure what needs to be done to fix it...
