在eclipse错误线程“main”中的异常java.lang.IllegalStateException

Question

public static void main(String[] args) {

    System.setProperty("webdriver.gecko.driver","E:\\geckodriver-v0.16.1-win32.exe");

    FirefoxOptions options = new FirefoxOptions();
    options.setBinary("C:\\Program Files (x86)\\Mozilla Firefox\\firefox.exe"); //This is the location where you have installed Firefox on your machine

    FirefoxDriver driver = new FirefoxDriver(options);

    driver.get("https://www.facebook.com/");

    //driver.manage().window().maximize();

错误

  

线程“main”中的异常java.lang.IllegalStateException：驱动程序   可执行文件不存在：E：\ geckodriver-v0.16.1-win32.exe

为什么会出现这个错误？ geckodriver-v0.16.1-win32.exe的路径是正确的。我该怎么办？