Severe Error: Invalid return from weather lookup, check hour and time step argument values are in range.

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Hi! I work in a Reinforcement Learning project and I simulate in a recurrent way EnergyPlus with the Pytho API as a library. Whe I run the simulation severa times appears in the error file the following:

** Severe  ** Invalid return from weather lookup, check hour and time step argument values are in range.

And the simulation continuing, but when the number of runnings increment the error is most frequently. At the end another error appears:

    ** Severe  ** Convergence error in SolveForWindowTemperatures for window ZN001:WALL001:WIN001
   **   ~~~   **  Environment=DDMM, at Simulation time=01/24 12:10 - 12:20
   **  Fatal  ** Program halted because of convergence error in SolveForWindowTemperatures for window ZN001:WALL001:WIN001

About the second error there are some clous to fix it, but I don't find anything about the first one. Somebody can help me? I do not why the problem is more frecuent with the time and finish in this another error when in a simple simulation no error ocurrs.

Thanks!