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我试图让 JS 加载一个网站，然后单击两个按钮。第一个按钮点击并通过，但第二个按钮抛出此错误

const ATC_Button = driver.wait(
 webdriver.until.elementLocated({ name: 'commit' }), 
 20000
);

const GTC_Button = driver.wait(
 webdriver.until.elementLocated({ xpath: '//*[@id="cart"]/a[2]' }), 
 20000
);


ATC_Button.click();
GTC_Button.click();

错误：

(node:21408) UnhandledPromiseRejectionWarning: WebDriverError: element not visible
  (Session info: chrome=66.0.3359.181)
  (Driver info: chromedriver=2.38.552522 (437e6fbedfa8762dec75e2c5b3ddb86763dc9dcb),platform=Windows NT 10.0.16299 x86_64)
    at Object.checkLegacyResponse (C:\New folder\JS\Bot V1\MYBot\node_modules\selenium-webdriver\lib\error.js:585:15)
    at parseHttpResponse (C:\New folder\JS\Bot V1\MYBot\node_modules\selenium-webdriver\lib\http.js:533:13)
    at Executor.execute (C:\New folder\JS\Bot V1\MYBot\node_modules\selenium-webdriver\lib\http.js:468:26)
    at <anonymous>
    at process._tickCallback (internal/process/next_tick.js:188:7)
(node:21408) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function
without a …