Can anyone help me with this model ??? (interminable integrator blocks error messages)

Hi everyone. I have been trying to run the simulation of my simulink model since 3 weeks (I have joined the simulink model to this question), But each time the message below is generated in an integrator block.

Derivative input 4 of 'ship_resistance_final/Atomic Subsystem Receivers /temperature in the exhaust receiver/Integrator' at time 0.0 is Inf or NaN. Stopping simulation. 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 have tried reducing the fixed step size (in the model configuration parameters) and tightening the error tolerances (in the integrator block parameters) but the problem remained unsolved.

Also, I have used memory blocks in the model, but as soon as the error messages stopped appearing in one integrator block they started appearing in another block, and at a certain stage even with the use of memory blocks the error messages kept appearing in the same integrator block.

Also, I have changed many times the values of the initial conditions of the model and I had the same problem.

I will be very grateful if anyone can help me make, the simulink model that I have joined to this question, work. Any type of help is welcome.

Many thanks to everyone in advance.