Steps to reproduce:

1. Have zabbix Server 5.2.6 installed
2. Update to 5.4.0 via PPA-sources
3. Find message in errorlog

   [Z3005] query failed: [0] PGRES_FATAL_ERROR:ERROR: foreign key constraint "c_items_3" cannot be implementedDETAIL: Key columns "valuemapid" and "valuemapid" are of incompatible types: numeric and bigint. '[alter table items add constraint c_items_3 foreign key (valuemapid) references valuemap (valuemapid)]

   database upgrade failed

4. Fixing this issue by switching valuemap.valuemapid from BIGINT to NUMERIC
5. Find next message in errorlog:

   [Z3005] query failed: [0] PGRES_FATAL_ERROR:ERROR: index "users_1" does not exist [drop index users_1]

   database upgrade failed