TYPO3 Core

If a $GLOBALS['TYPO3_CONF_VARS']['BE']['warning_email_addr'] is set a DBAL-DriverException will occur in the backend log if there have been failed login attempts on a TYPO3 running with PostgreSQL:

Core: Exception handler (WEB):
Uncaught TYPO3 Exception:
An exception occurred while executing 
'SELECT COUNT("uid") FROM "sys_log" WHERE ("type" = ?) AND ("action" = ?) AND ("error" <> ?) AND ("tstamp" > ?) ORDER BY "tstamp" ASC'
with params
[255, 3, 0, 1592228590]:
SQLSTATE[42803]: Grouping error: 7 FEHLER: Spalte »sys_log.tstamp« muss in der GROUP-BY-Klausel erscheinen oder in einer Aggregatfunktion verwendet werden
LINE 1: ... AND ("error" <> $3) AND ("tstamp" > $4) ORDER BY "tstamp" A... ^
Doctrine\DBAL\Exception\DriverException thrown in file /vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/AbstractPostgreSQLDriver.php in line 79.
Requested URL: https://example.org/typo3/index.php?loginProvider=1433416747

This leads to the warning email not being sent.