Zabbix Upgrade 3.4 to 4.0

tail -f /var/log/zabbix/zabix_server.log

20744:20181029:011724.340 Starting Zabbix Server. Zabbix 4.0.0 (revision 85308).
20744:20181029:011724.340 ****** Enabled features ******
20744:20181029:011724.340 SNMP monitoring: YES
20744:20181029:011724.340 IPMI monitoring: YES
20744:20181029:011724.340 Web monitoring: YES
20744:20181029:011724.340 VMware monitoring: YES
20744:20181029:011724.340 SMTP authentication: YES
20744:20181029:011724.340 Jabber notifications: YES
20744:20181029:011724.340 Ez Texting notifications: YES
20744:20181029:011724.340 ODBC: YES
20744:20181029:011724.340 SSH2 support: YES
20744:20181029:011724.340 IPv6 support: YES
20744:20181029:011724.340 TLS support: YES
20744:20181029:011724.340 ******************************
20744:20181029:011724.340 using configuration file: /etc/zabbix/zabbix_server.conf
20744:20181029:011724.356 current database version (mandatory/optional): 03050001/03050001
20744:20181029:011724.356 required mandatory version: 04000000
20744:20181029:011724.356 starting automatic database upgrade
20744:20181029:012701.578 [Z3005] query failed: [1034] Incorrect key file for table 'events'; try to repair it [alter table `events` add `name` varchar(2048) default '' not null]