Neuron solver failed

hello,everyone. When I import the tutorial of monopole in neuro tutorials.As the picture shows, the point sensor tool button is gray and I can't click it.
微信图片_20211108114052.png 微信图片_20211108114303.png
微信图片_20211108114750.png
and the run button is gray, too.I can't run the solver. I ensure I have loaded the model and the log shows the model loaded successfully. I don't know what the problem is. Hope you can reply me and help me.
Best wishes.