Can anyone please help urgently. I have recently upgraded my system from zcs os 4.5.5 to zcs os 5.0.1 after that my zmmailboxdctl is not getting started.

Error logs is showing this: stale pid 25519 found in /opt/zimbra/log/ No such process

antispam Running
antivirus Running
ldap Running
logger Running
mailbox Stopped
zmmailboxdctl is not running
mta Running
snmp Running
spell Running
stats Running

Please help urgently.