Unable to meet integration tolerances without reducing the step size below the smallest value allowed (4.988297e-15) at time t. How to solve this error.

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Yogeshwari Chandrawat
Hi my simulation result using ode45 for 10 simultaneous equations shows a warning message of ,
"Failure at t=1.404081e+00. Unable to meet integration tolerances without reducing the step size below the smallest value allowed (4.988297e-15) at time t. "
And thus I am getting results only for the first 1.5 seconds while I want to run the simulation for more than 300 seconds. I have tried other ode's as well but they show the same failure.
How to resolve this?

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