Matrix has zero on diagonal

Hi experts,

I mat a problem when simulate a AC/DC model.
it came out as below:

Failed to find a solution for the initial parameter.
Segregated group1

Matrix has zero on diagonal.
Returned solution is not converged.
-Feature: stationary solver2(sol1/s2)
-Error: Failed to find a solution for the initial parameter.

any suggestions and help will be highly appreciated!



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