You can try running encryption in safe mode next time.
make sure there is no security software interfering this process. Close them all just in case.
You can try out this commands to fix encryption status:
pgpwde --resume --disk 0 -p PASSWORD
pgpwde --add-user --disk 0 --user USERNAME -p PASSWORD
pgpwde --resume --disk 0 --force
pgpwde --stop --disk 0