Failed to start dnf makecache

Any idea how to debug this? Dec 30 11:01:29 nbecker8 systemd[1]: Starting dnf makecache... Dec 30 11:01:29 nbecker8 dnf[1421142]: error: rpmdb: BDB0113 Thread/process 2496606/140314318812864 failed: BDB1507 Thread died in Berkeley DB library Dec 30 11:01:29 nbecker8 dnf[1421142]: error: db5 error(-30973) from dbenv->failchk: BDB0087 DB_RUNRECOVERY: Fatal error, run database recovery Dec 30 11:01:29 nbecker8 dnf[1421142]: error: cannot open Packages index using db5 - (-30973) Dec 30 11:01:29 nbecker8 dnf[1421142]: error: cannot open Packages database in /var/lib/rpm Dec 30 11:01:29 nbecker8 dnf[1421142]: Error: Error: rpmdb open failed Dec 30 11:01:29 nbecker8 systemd[1]: dnf-makecache.service: Main process exited, code=exited, status=1/FAILURE Dec 30 11:01:29 nbecker8 systemd[1]: dnf-makecache.service: Failed with result 'exit-code'. Dec 30 11:01:29 nbecker8 systemd[1]: Failed to start dnf makecache. -- *Those who don't understand recursion are doomed to repeat it*