Suddenly close when I use some Python component in one interface

is this problem that some Python component run at same time in one interface?

because I made 3D Frame analysis program in Fortran and call it with ctypes in Python component. at first, I successed to call it and got correct result thought, after connect with some components including python. it stopped and forcibly closed.

compare to first attempt, I guess what some python components exist in one interface is the problem.
what do you think?
does somebody have same experience?

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