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Hello, I use opensees to analyze the stability of the slope, and the model has been established, but the analysis always returns -3, I don't know if it is the reason for the non-convergence. I need to analyze the self-weight reaction of the soil first. Since I'm a beginner, I don't know what's wrong...

Hello, I am studying the stability of slopes. As a beginner, I failed in the self-weight analysis after establishing the slope model. If you are also studying geotechnical soil, I would like to ask you some questions.