Swoole导出报ERRORzm_deactivate_swoole(ERROR103)

PHP Fatal error:  Allowed memory size of 838860800 bytes exhausted (tried to allocate 32 bytes) in /home2/wwwroot/default/test/backend/web/excel/PHPExcel/Cell.php on line 586

[2017-06-12 11:25:32 ^21679.1]    ERROR    zm_deactivate_swoole (ERROR 103): Fatal error: Allowed memory size of 838860800 bytes exhausted (tried to allocate 32 bytes) in /home2/wwwroot/default/test/backend/web/excel/PHPExcel/Cell.php on line 586.

[2017-06-12 11:25:32 $21659.0]    WARNING    swManager_check_exit_status: worker#1 abnormal exit, status=255, signal=0

MasterPid=21650|Manager_pid=21659

Server: start.Swoole version is [1.8.11]