a raid bot not running 24/7 but just for certain raids. different user can start bot. they r in different access groups and the creating of the log files with access owner crashes bot (dont have a deep look in their access management).
i helped them out with a workarround in log()
chmod ($this -> log_path . "/" . gmdate("Y-m-d") . ".txt", 0777);
after fclose($log)
for future we should implement a check on fopen (fopen returns true/false). dont know a practicable solution for that atm.