潘多拉用ENV生成的工程，无法挂载W25Q128文件系统

/* 挂载 spi flash 中名为 "filesystem" 的分区上的文件系统 */
    if (dfs_mount(flash_dev->parent.name, "/", "elm", 0, 0) == 0)
    {
        LOG_I("Filesystem initialized!");
    }
    else
    {
        LOG_E("Failed to initialize filesystem!");
        LOG_D("You should create a filesystem on the block device first!");
    }
    int len;
    char wbuf[] = "hello world!";
    char buff[1024];
    /* 打开名为 "filesystem" 的分区 */
    int fd = open("/hello.txt", O_RDWR);
    if (fd < 0)
    {
        rt_kprintf("Open filesystem partition failed\n");
        return -1;
    }
    /* 从文件中读取数据 */
    len = write(fd, wbuf, sizeof(wbuf));
    lseek(fd, 0, SEEK_SET);
//    fseek(fd, 0, SEEK_SET);
    /* 从文件中读取数据 */
    len = read(fd, buff, sizeof(buff));
    if (len < 0)
    {
        rt_kprintf("Read file failed\n");
        close(fd);
        return -1;
    }
    /* 打印读取的数据 */
    rt_kprintf("Data read from file: %s\n", buff);