python迷宫求解程序列表索引超出范围错误

maze = [
    [1, 1, 1, 1],
    [1, 0, 0, 1],
    [1, 1, 1, 1]
]

def solve_maze(maze):
    start = (0, 0)
    end = (len(maze)-1, len(maze[0])-1)
    
    path = []
    visited = set()
    
    if find_path(maze, start, end, path, visited):
        print("Path found:", path)
    else:
        print("No path found.")

def find_path(maze, curr, end, path, visited):
    if curr == end:
        path.append(curr)
        return True
    
    x, y = curr
    if x < 0 or x >= len(maze) or y < 0 or y >= len(maze[0]) or maze[x][y] == 0 or curr in visited:
        return False
    
    visited.add(curr)
    path.append(curr)
    
    if find_path(maze, (x+1, y), end, path, visited) or find_path(maze, (x-1, y), end, path, visited) or find_path(maze, (x, y+1), end, path, visited) or find_path(maze, (x, y-1), end, path, visited):
        return True
    
    path.pop()
    return False

solve_maze(maze)