Simulink - How can I solve discontinuities detected within algebraic loop(s) in the block diagram?

The model consists in PWM voltage mode controlled boost converter. Running its simulation it appears a warning in the command window: "Discontinuities detected within algebraic loop(s), may have trouble solving". Debugging the problem and using the command "ashow" in order to receive more detail about the algebraic loop I reed the following lines:

Found 1 Algebraic loop(s): System number#Algebraic loop id, number of blocks in loop - 0#1, 9 blocks in loop

I attache here as files both the parameters and model itself.

I'd like to understand if the problem is connected with the way in which I've built the model or with the time discretization. In both cases I'd be grateful to understand how to solve it.

Thanks for the attention.

[Sara]

- where are the files you have attached?

[Caterina Binetti]

sorry, here they are