Hello Yash Shah,
welcome to the B&R community!
This error occurs when a C task is calling functions whose interface is not provided to the compiler.
e.g. calling sin() without including
#include <math.h>
(The compiler assumes that the return value is an integer, but it is a float or double and put on the FPU stack. Nothing is retrieving it from there, leading to a FPU stack overflow after some time.)
I just tested this on my system and got the same exception.
Please check all your C programs, if this is the case.
The compiler reports a warning when it sees this, e.g.:
implicit declaration of function ‘sin’ [-Wimplicit-function-declaration] Ln: 14, Col: 26