Integrator error in simulink ?

what i can do to solve this error please ? :

"An error occurred while running the simulation and the simulation was terminated

Caused by: Derivative of state '1' in block 'model_dynamique/Integrator' at time 0.0 is not finite. The simulation will be stopped. There may be a singularity in the solution. If not, try reducing the step size (either by reducing the fixed step size or by tightening the error tolerances)"

i've tried to change the solver, the relative and the absolute tolerance, but it doesn't work !!

Any other suggestions please?

Answer 1

[madhan ravi]

Try reducing the step size as it suggests?

[Amal NEFRAOUI]

i've already tried it, but i'm having the same error