Hi Team, forgive me for asking some basic questions…I am really enjoying EasyEda, I tried several other similar programs and this is by far the easiest to use for drawing circuits. However I am trying to run a simulation for the first time and I am in new territory and lost. My first problem is that I am getting an error message…"There are some parts haven't spice model, please use EElib and "Spice Symol" at Libraries of "Simulation" mode or you can assign the spice model for them" I have used due diligence and searched and found another person who had the same problem… [https://easyeda.com/forum/topic/How-to-find-model-with-Spice-Simulation-d347036f71154200a6cb5d5c460363f7](https://easyeda.com/forum/topic/How-to-find-model-with-Spice-Simulation-d347036f71154200a6cb5d5c460363f7) However this has only made me more confused, because every component I used was used from the menus on easyeda… so I really don’t understand why I am having this problem (they should all be spice models already?) I also don’t understand what it is asking me to do exactly, and I also don’t understand how to figure out which component doesn’t have a spice model.The more research I do the more I am going round in circles. I also have a second question regarding this document…[https://docs.easyeda.com/en/Simulation/Spice-Simulation/index.html](https://docs.easyeda.com/en/Simulation/Spice-Simulation/index.html)It says “Your circuits must have a GND net.” My question is should I interpret that to mean that I need to physically draw a ground loop between all of the grounds? Again I have used due diligence by searching for definitions for “ground net”, I saw lots of mentions… but no definition.