1. Fix bug: Grafana queries tdengine for illegal memory access 2. Fix bug: not active session 3. The show accounts command supports the use of non root accounts. 4. Fix bug: After the two servers cluster and the masterip machine goes down, no heartbeat causes the power or Taos connection to fail 5. Fix bug: When the client specifies a database login that does not exist, it causes taosd crash. 6. Fix bug: Synchronization failed after version upgrade from v1.6.4 to v1.6.5. 7. Fix code issues reported by coverage scan