Thanks for these, I appreciate it. The results of each command were the following:
$ sudo apt install --reinstall libalkimia4 dpkg: unrecoverable fatal error, aborting: files list file for package 'libalkimia4' is missing final newline E: Sub-process /usr/bin/dpkg returned an error code (2) $ apt download libalkimia4 && sudo dpkg -i libalkimia4*.deb dpkg: unrecoverable fatal error, aborting: files list file for package 'libalkimia4' is missing final newline $ sudo apt purge libalkimia4 && sudo apt install libalkimia4 dpkg: unrecoverable fatal error, aborting: files list file for package 'libalkimia4' is missing final newline E: Sub-process /usr/bin/dpkg returned an error code (2)