List query = sysUserService.query("id", Cnd.where("id", "=", userId));

此代码查询为什么时而可以正常查询，时而抛出异常？

[ERROR] 2024-10-09 16:46:27,820 cn.wizzer.framework.base.Result.error(Result.java:80) - cn.wizzer.app.sys.modules.models.Sys_user cannot be cast to java.util.List
java.lang.ClassCastException: cn.wizzer.app.sys.modules.models.Sys_user cannot be cast to java.util.List
	at org.nutz.dao.impl.sql.NutStatement.getList(NutStatement.java:127)
	at org.nutz.dao.impl.NutDao.query(NutDao.java:483)
	at org.nutz.dao.impl.NutDao.query(NutDao.java:487)
	at sun.reflect.GeneratedMethodAccessor173.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.nutz.dao.util.ExtDaoInvocationHandler$1.run(Daos.java:1051)
	at org.nutz.dao.FieldFilter.run(FieldFilter.java:286)
	at org.nutz.dao.FieldFilter.run(FieldFilter.java:297)
	at org.nutz.dao.util.ExtDaoInvocationHandler.invoke(Daos.java:1067)
	at com.sun.proxy.$Proxy216.query(Unknown Source)
	at cn.wizzer.framework.base.service.BaseServiceImpl.query(BaseServiceImpl.java:426)