Postgresql timezone and error message provided grok expressions do not match field value

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1

Helloy there, im new in elk.
can someone tell me how to fix the error "error message provided grok expressions do not match field value". I found out that when the time zone is specified as an abbreviation in the postgres logs, there is no error log, example:

2025-09-12 13:30:24.962 MSK [11423] LOG:  database system is ready to accept connections
2025-09-12 13:30:24.965 MSK [11458] LOG:  TimescaleDB background worker launcher connected to shared catalogs

but when the time zone is specified in numbers, it gives an error, for example

2025-09-12 12:20:38.985 +05 [22657] zabbix@zabbix_proxy LOG:  duration: 1.102 ms  statement: commit;
2025-09-12 12:20:38.985 +05 [22657] zabbix@zabbix_proxy LOG:  duration: 0.123 ms  statement: begin;

how fix it?

I don't know how to change grok to make it work. i use postgresql 13. filebeat-9.1.3

2

I solved the problem with the time zone, but not completely, now it gives a parsing error
error.message

Text '2025-09-15 21:59:25.803 +05' could not be parsed at index 24