Sql mode=only full group by

U všech webů localhost/webtrees se v mnoha případech přestal zobrazovat postranní panel na stránce osoby. Platilo to v případě, kdy byl aktivní přídavný modul Vytux_cousins (Bratranci).

V deníku chyb byla chybová zpráva:

/var/www/Projekty/webtrees-1.7/app/Statement.php:82 SQLSTATE[42000]: Syntax error or access violation: 1055 Expression #3 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'webtrees-1.7.1.wt_name.n_givn' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by
#0 /app/Statement.php:82 PDOException("SQLSTATE[42000]: Syntax error or access violation: 1055 Expression #3 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'webtrees-1.7.1.wt_name.n_givn' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by")
#1 /modules_v3/vytux_cousins/module.php:148 execute([array])

1. 2 /individual.php:227 getTabContent()