Upgrade fails during configuration migration due to an invalid email address format with any Avi user account.
Go to shell mode on Controller Node
# shell
> show upgrade status details filter controller
Error: Unable to complete task migrate_config on ['node.controller.local']
# Logs to check on Controller Node
/var/lib/avi/log/upgrade-coordinator.log
Unable to complete task migrate_config on ['node.controller.local']
# Here take the example for Avi admin user configured with invalid email address
/var/lib/avi/log/task_journal/upgrade_import_config.json
Serializing error {'email': ['Enter a valid e-mail address.']} for UserSerializer
VMware Avi Load Balancer
Affected Version: 22.1.x, 30.2.x and 31.2.x
Fix the Email Address BEFORE Upgrade