Stack overflow errors occur when your recursive function exceeds the system's recursion depth limit, which is common in problems with deep recursive calls, like in depth-first search (DFS) on large graphs or divide-and-conquer algorithms. One way to fix this is by converting the recursive algorithm into an iterative one using an explicit stack to store the function's state. This avoids the system's call stack limitations and allows deeper traversal. If recursion is essential, and you're working in a language like Python, you can increase the recursion limit using `sys.setrecursionlimit()` to handle larger depths. However, increasing the recursion limit is risky and can lead to memory issues, so it's better to refactor your code to use iterative solutions when possible.