Do you have EV-18 as SQLite schema? Run this script to see the schema:
grommunio-admin user query username maildir | grep "/user/" | while read -r user mdir; do printf "EV-%s %s %s\n" "$(echo "SELECT config_value FROM configurations WHERE config_id=10;" | sqlite3 -noheader ${mdir}/exmdb/exchange.sqlite3 )" "$user" "$mdir"; done | sort -h
I assume this script is from CRPB.
The mysql schema should be gx-131, test with:
gromox-dbop -U