No power supply specified for netVCC in Power Rail Confiquration.

应该是仿真出错了。        

点击如图：Configure Power Rails 

跳出这个窗口，把VCC添加过去，记得点击左下角:Use default power rail connection,点击

标签：Use,power,Power,supply,点击,报错,左下角
来源： https://blog.csdn.net/nini0831kiki/article/details/120383306