MATLAB: Algebraic state in algebraic loop

algebraic loop

Unable to understand this {"Algebraic state in algebraic loop containing 'untitled/Subsystem/V*(dI//dV)' computed at time 0.0 is Inf or NaN. There may be a singularity in the solution. If the model is correct, try reducing the step size (either by reducing the fixed step size"} problem.
Please help me to find and fix out it! Thanks, Prome.

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I have attached my file and a screenshot of error.
please help me to fix it.
thanks
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