A stack overflow error, also known as a stack overflow exception, is an error that occurs when a computer program calls a function or subroutine so many times that the call stack, a region of memory that stores the parameters, local variables, and return address for each function call, overflows. This can happen when a program has a recursive function that calls itself too many times, or when a program has a loop that iterates too many times.
Stack overflow errors can be difficult to debug, because they can occur deep within a program’s call stack. However, there are a few things that you can do to avoid them.