SQL-DATABASE ERROR

Database error in WoltLab Burning Board: Invalid SQL: SELECT e.*, g.chgpermission, cc.*, re.* FROM bb1_events e LEFT JOIN bb1_users u USING (userid) LEFT JOIN bb1_groups g USING (groupid) LEFT JOIN bb1_events_ret re ON (e.eventid=re.eventid) LEFT JOIN bb1_cal_cats cc ON (e.catid=cc.catid) WHERE (public='1' AND ((FIND_IN_SET('5',e.permission)>0 OR e.permission='') AND FIND_IN_SET('5',g.chgpermission)>0) OR e.userid=0) AND ((ret_enddate>='2023-09-01' OR ret_enddate<=eventdate) AND eventdate<='2023-09-30' AND (MOD(PERIOD_DIFF(DATE_FORMAT(e.eventdate,'%y%m'),20239),retval)=0 AND retmode='month' OR (MOD(PERIOD_DIFF(DATE_FORMAT(e.eventdate,'%y%m'),202309),(retval*12))=0 AND retmode='year') OR retmode!='year' AND retmode!='month') OR MONTH(eventdate)='9' AND YEAR(eventdate)='2023' AND re.retmode IS NULL)
mysql error: Table 'd007f858.bb1_events_ret' doesn't exist
mysql error number: 1146
Date: 22.09.2023 @ 10:31
Script: /calender.php?sid=79f88d3fe3fd1820277d8741aab97b47
Referer: