禅道18.0 添加产品需求BUG-连接超时，请检查网络环境，或重试！

错误信息如下

16:53:52 Uncaught TypeError: count(): Argument #1 ($value) must be of type Countable|array, null given in /data/wwwroot/www/zentaopms/module/story/control.php:273

Stack trace:
#0 /data/wwwroot/www/zentaopms/framework/base/router.class.php(2199): story->create()
#1 /data/wwwroot/www/zentaopms/www/index.php(74): baseRouter->loadModule()
#2 {main}
thrown in /data/wwwroot/www/zentaopms/module/story/control.php on line 273 when visiting /index.php?m=story&f=create&product=8&branch=all&moduleID=0&storyID=0&projectID=0&bugID=0&planID=0&todoID=0&extra=&storyType=story