31973:20190201:171954.346 Starting Zabbix Server. Zabbix 4.0.3 (revision 87993).
 31973:20190201:171954.347 ****** Enabled features ******
 31973:20190201:171954.347 SNMP monitoring: YES
 31973:20190201:171954.347 IPMI monitoring: YES
 31973:20190201:171954.347 Web monitoring: YES
 31973:20190201:171954.347 VMware monitoring: YES
 31973:20190201:171954.347 SMTP authentication: YES
 31973:20190201:171954.347 Jabber notifications: NO
 31973:20190201:171954.347 Ez Texting notifications: YES
 31973:20190201:171954.347 ODBC: YES
 31973:20190201:171954.347 SSH2 support: NO
 31973:20190201:171954.347 IPv6 support: YES
 31973:20190201:171954.348 TLS support: YES
 31973:20190201:171954.348 ******************************
 31973:20190201:171954.348 using configuration file: /etc/zabbix/zabbix_server.conf
 31973:20190201:171954.489 current database version (mandatory/optional): 03040000/03040007
 31973:20190201:171954.490 required mandatory version: 04000000
 31973:20190201:171954.490 optional patches were found
 31973:20190201:171954.490 starting automatic database upgrade
 31973:20190201:171954.797 completed 0% of database upgrade
 31973:20190201:171954.804 completed 1% of database upgrade
 31973:20190201:171958.684 slow query: 3.879001 sec, "alter table `events` add `name` varchar(2048) default '' not null"
 31973:20190201:171958.982 completed 2% of database upgrade
 31973:20190201:171959.413 completed 3% of database upgrade
 31973:20190201:172000.114 completed 4% of database upgrade
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 31973:20190201:172002.801 completed 24% of database upgrade
 31973:20190201:172002.808 completed 25% of database upgrade
 31973:20190201:172004.198 completed 26% of database upgrade
zabbix_server [3764]: ERROR [file:../../../../src/zabbix_server/taskmanager/taskmanager.c,line:388] Something impossible has just happened.
 3764:20190201:172005.164 === Backtrace: ===
 3764:20190201:172005.164 7: /usr/sbin/zabbix_server: task manager [processing tasks](zbx_backtrace+0x47) [0x5623d6de42c7]
 3764:20190201:172005.164 6: /usr/sbin/zabbix_server: task manager [processing tasks](taskmanager_thread+0x26f) [0x5623d6e3720f]
 3764:20190201:172005.165 5: /usr/sbin/zabbix_server: task manager [processing tasks](zbx_thread_start+0x24) [0x5623d6de43d4]
 3764:20190201:172005.165 4: /usr/sbin/zabbix_server: task manager [processing tasks](MAIN_ZABBIX_ENTRY+0x5bb) [0x5623d6e6a4cb]
 3764:20190201:172005.165 3: /usr/sbin/zabbix_server: task manager [processing tasks](daemon_start+0x1ce) [0x5623d6de94be]
 3764:20190201:172005.165 2: /usr/sbin/zabbix_server: task manager [processing tasks](main+0x347) [0x5623d6d68ab7]
 3764:20190201:172005.165 1: /lib64/libc.so.6(__libc_start_main+0xf3) [0x7f5e58bebee3]
 3764:20190201:172005.165 0: /usr/sbin/zabbix_server: task manager [processing tasks](_start+0x2e) [0x5623d6d68e6e]
 31973:20190201:172007.029 completed 27% of database upgrade
 31973:20190201:172008.439 completed 28% of database upgrade
zabbix_server [3764]: ERROR [file:../../../../src/zabbix_server/taskmanager/taskmanager.c,line:388] Something impossible has just happened.
 3764:20190201:172010.168 === Backtrace: ===
 3764:20190201:172010.168 7: /usr/sbin/zabbix_server: task manager [processing tasks](zbx_backtrace+0x47) [0x5623d6de42c7]
 3764:20190201:172010.168 6: /usr/sbin/zabbix_server: task manager [processing tasks](taskmanager_thread+0x26f) [0x5623d6e3720f]
 3764:20190201:172010.169 5: /usr/sbin/zabbix_server: task manager [processing tasks](zbx_thread_start+0x24) [0x5623d6de43d4]
 3764:20190201:172010.169 4: /usr/sbin/zabbix_server: task manager [processing tasks](MAIN_ZABBIX_ENTRY+0x5bb) [0x5623d6e6a4cb]
 3764:20190201:172010.169 3: /usr/sbin/zabbix_server: task manager [processing tasks](daemon_start+0x1ce) [0x5623d6de94be]
 3764:20190201:172010.169 2: /usr/sbin/zabbix_server: task manager [processing tasks](main+0x347) [0x5623d6d68ab7]
 3764:20190201:172010.169 1: /lib64/libc.so.6(__libc_start_main+0xf3) [0x7f5e58bebee3]
 3764:20190201:172010.169 0: /usr/sbin/zabbix_server: task manager [processing tasks](_start+0x2e) [0x5623d6d68e6e]
 31973:20190201:172011.199 completed 29% of database upgrade
 31973:20190201:172012.684 completed 30% of database upgrade
zabbix_server [3764]: ERROR [file:../../../../src/zabbix_server/taskmanager/taskmanager.c,line:388] Something impossible has just happened.
 3764:20190201:172015.171 === Backtrace: ===
 3764:20190201:172015.172 7: /usr/sbin/zabbix_server: task manager [processing tasks](zbx_backtrace+0x47) [0x5623d6de42c7]
 3764:20190201:172015.172 6: /usr/sbin/zabbix_server: task manager [processing tasks](taskmanager_thread+0x26f) [0x5623d6e3720f]
 3764:20190201:172015.172 5: /usr/sbin/zabbix_server: task manager [processing tasks](zbx_thread_start+0x24) [0x5623d6de43d4]
 3764:20190201:172015.172 4: /usr/sbin/zabbix_server: task manager [processing tasks](MAIN_ZABBIX_ENTRY+0x5bb) [0x5623d6e6a4cb]
 3764:20190201:172015.172 3: /usr/sbin/zabbix_server: task manager [processing tasks](daemon_start+0x1ce) [0x5623d6de94be]
 3764:20190201:172015.172 2: /usr/sbin/zabbix_server: task manager [processing tasks](main+0x347) [0x5623d6d68ab7]
 3764:20190201:172015.172 1: /lib64/libc.so.6(__libc_start_main+0xf3) [0x7f5e58bebee3]
 3764:20190201:172015.172 0: /usr/sbin/zabbix_server: task manager [processing tasks](_start+0x2e) [0x5623d6d68e6e]
 31973:20190201:172015.576 completed 31% of database upgrade
 31973:20190201:172018.447 completed 32% of database upgrade
 31973:20190201:172019.941 completed 33% of database upgrade
zabbix_server [3764]: ERROR [file:../../../../src/zabbix_server/taskmanager/taskmanager.c,line:388] Something impossible has just happened.
 3764:20190201:172020.174 === Backtrace: ===
 3764:20190201:172020.175 7: /usr/sbin/zabbix_server: task manager [processing tasks](zbx_backtrace+0x47) [0x5623d6de42c7]
 3764:20190201:172020.175 6: /usr/sbin/zabbix_server: task manager [processing tasks](taskmanager_thread+0x26f) [0x5623d6e3720f]
 3764:20190201:172020.175 5: /usr/sbin/zabbix_server: task manager [processing tasks](zbx_thread_start+0x24) [0x5623d6de43d4]
 3764:20190201:172020.175 4: /usr/sbin/zabbix_server: task manager [processing tasks](MAIN_ZABBIX_ENTRY+0x5bb) [0x5623d6e6a4cb]
 3764:20190201:172020.175 3: /usr/sbin/zabbix_server: task manager [processing tasks](daemon_start+0x1ce) [0x5623d6de94be]
 3764:20190201:172020.175 2: /usr/sbin/zabbix_server: task manager [processing tasks](main+0x347) [0x5623d6d68ab7]
 3764:20190201:172020.175 1: /lib64/libc.so.6(__libc_start_main+0xf3) [0x7f5e58bebee3]
 3764:20190201:172020.175 0: /usr/sbin/zabbix_server: task manager [processing tasks](_start+0x2e) [0x5623d6d68e6e]
 31973:20190201:172022.800 completed 34% of database upgrade
zabbix_server [3764]: ERROR [file:../../../../src/zabbix_server/taskmanager/taskmanager.c,line:388] Something impossible has just happened.
 3764:20190201:172025.177 === Backtrace: ===
 3764:20190201:172025.178 7: /usr/sbin/zabbix_server: task manager [processing tasks](zbx_backtrace+0x47) [0x5623d6de42c7]
 3764:20190201:172025.178 6: /usr/sbin/zabbix_server: task manager [processing tasks](taskmanager_thread+0x26f) [0x5623d6e3720f]
 3764:20190201:172025.178 5: /usr/sbin/zabbix_server: task manager [processing tasks](zbx_thread_start+0x24) [0x5623d6de43d4]
 3764:20190201:172025.178 4: /usr/sbin/zabbix_server: task manager [processing tasks](MAIN_ZABBIX_ENTRY+0x5bb) [0x5623d6e6a4cb]
 3764:20190201:172025.178 3: /usr/sbin/zabbix_server: task manager [processing tasks](daemon_start+0x1ce) [0x5623d6de94be]
 3764:20190201:172025.178 2: /usr/sbin/zabbix_server: task manager [processing tasks](main+0x347) [0x5623d6d68ab7]
 3764:20190201:172025.178 1: /lib64/libc.so.6(__libc_start_main+0xf3) [0x7f5e58bebee3]
 3764:20190201:172025.178 0: /usr/sbin/zabbix_server: task manager [processing tasks](_start+0x2e) [0x5623d6d68e6e]
 31973:20190201:172025.676 completed 35% of database upgrade
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 31973:20190201:172029.741 completed 51% of database upgrade
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 31973:20190201:172029.770 completed 54% of database upgrade
 31973:20190201:172029.775 completed 55% of database upgrade
 31973:20190201:172029.787 completed 56% of database upgrade
 31973:20190201:172029.793 completed 57% of database upgrade
 31973:20190201:172029.912 completed 58% of database upgrade
 31973:20190201:172029.924 completed 59% of database upgrade
 31973:20190201:172029.930 completed 60% of database upgrade
 31973:20190201:172030.017 completed 61% of database upgrade
 31973:20190201:172030.134 completed 62% of database upgrade
 31973:20190201:172030.140 completed 63% of database upgrade
 31973:20190201:172030.167 completed 64% of database upgrade
zabbix_server [3764]: ERROR [file:../../../../src/zabbix_server/taskmanager/taskmanager.c,line:388] Something impossible has just happened.
 3764:20190201:172030.180 === Backtrace: ===
 3764:20190201:172030.180 7: /usr/sbin/zabbix_server: task manager [processing tasks](zbx_backtrace+0x47) [0x5623d6de42c7]
 3764:20190201:172030.181 6: /usr/sbin/zabbix_server: task manager [processing tasks](taskmanager_thread+0x26f) [0x5623d6e3720f]
 3764:20190201:172030.181 5: /usr/sbin/zabbix_server: task manager [processing tasks](zbx_thread_start+0x24) [0x5623d6de43d4]
 3764:20190201:172030.181 4: /usr/sbin/zabbix_server: task manager [processing tasks](MAIN_ZABBIX_ENTRY+0x5bb) [0x5623d6e6a4cb]
 3764:20190201:172030.181 3: /usr/sbin/zabbix_server: task manager [processing tasks](daemon_start+0x1ce) [0x5623d6de94be]
 3764:20190201:172030.181 2: /usr/sbin/zabbix_server: task manager [processing tasks](main+0x347) [0x5623d6d68ab7]
 3764:20190201:172030.181 1: /lib64/libc.so.6(__libc_start_main+0xf3) [0x7f5e58bebee3]
 3764:20190201:172030.181 0: /usr/sbin/zabbix_server: task manager [processing tasks](_start+0x2e) [0x5623d6d68e6e]
 31973:20190201:172030.201 completed 65% of database upgrade