If I create and run this sim:
![image.png](//image.easyeda.com/pullimage/YZQ6Q8bB3H601vNDb5APjYeNpM39pDQG6qAKVrZk.png)
then it does not produce a WaveForm plot.
If I delete the VP or the VN voltage probe then the simulation produces a Waveform plot.
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Chrome
89.0.4389.114
Linux
EasyEDA
6.4.19.4