备份时报错，帮忙看看什么原因？Argument #1 ($stream) must be of type resource, bool given in /opt/zbox/app/zentao/lib/zdb/zdb.class.php:232

Fatal error: Uncaught TypeError: fwrite(): Argument #1 ($stream) must be of type resource, bool given in /opt/zbox/app/zentao/lib/zdb/zdb.class.php:232

Stack trace:

#0 /opt/zbox/app/zentao/lib/zdb/zdb.class.php(232): fwrite(false, 'SET NAMES utf8;...')

#1 /opt/zbox/app/zentao/module/backup/model.php(24): zdb->dump('/data/zentao_ba...')

#2 /opt/zbox/app/zentao/module/backup/zen.php(63): backupModel->backSQL('/data/zentao_ba...')

#3 /opt/zbox/app/zentao/module/backup/control.php(196): backupZen->backupSQL('202408281803249...', 'yes')

#4 /opt/zbox/app/zentao/framework/base/router.class.php(2479): backup->backup('yes', 'manual')

#5 /opt/zbox/app/zentao/framework/router.class.php(769): baseRouter->loadModule()

#6 /opt/zbox/app/zentao/www/index.php(88): router->loadModule()

#7 {main} thrown in /opt/zbox/app/zentao/lib/zdb/zdb.class.php on line 232