We are currently tracking an issue in rippled 2.6.0. We recommend that the UNL community roll back to
version 2.5.0. In the meantime, we’ll work on a hotfix and share updates as they become available.
If you've installed 2.6.0, downgrade with the appropriate package manager command for your distribution:
Ubuntu/Debian
apt-get install rippled=2.5.0-1
Red Hat derivatives
dnf install rippled-2.5.0