英文:
Cannot read property prototype of null web driver exception is getting displayed
问题
我正在尝试运行 Selenium 脚本，之前成功运行了 100 次。但现在出现以下错误，代码没有任何更改，连一个字母都没有改动。我尝试以下方式来解决我的问题：
由于我知道问题不在于代码，我猜测问题可能出现在 WebDriver 或 Chrome Driver 的配置中。
-> 将脚本中使用的 Chrome Driver 更新到版本 81，因为我的 Chrome 浏览器也是版本 81。
-> 将 Selenium JAR 包更新到最新版本。（使用旧版本时我仍然遇到相同的问题，使用新版本时也遇到相同的问题）
错误日志指向了下面的 if 条件，用于脚本执行失败：
if(driver.getTitle().contains(" MyAccount - Log In")) {
driver.findElement(By.id("aSsoLogin")).click();
driver.findElement(By.id("username")).clear();
driver.findElement(By.id("username")).sendKeys(prop.getProperty("id"));
driver.findElement(By.id("password")).clear();
driver.findElement(By.id("password")).sendKeys(prop.getProperty("pwd"));
driver.findElement(By.id("submitFrm")).click();
if(driver.getTitle().equalsIgnoreCase("GE Browser Security Check")) {
wait.until(ExpectedConditions.elementToBeClickable(driver.findElement(By.xpath("//*[text()='Remind me later']"))));
driver.findElement(By.xpath("//*[text()='Remind me later']")).click();
}
}
错误信息如下：
org.openqa.selenium.WebDriverException: unknown error: Runtime.evaluate threw exception: TypeError: Cannot read property 'prototype' of null
...
Session 信息：chrome=81.0.4044.92
Driver 信息：org.openqa.selenium.chrome.ChromeDriver
Capabilities {acceptInsecureCerts: false, browserName: chrome, browserVersion: 81.0.4044.92, ...}
错误日志指向了 if 条件处，这是脚本执行失败的原因。
英文:
I am trying to run selenium script which ran 100 times successfully previously. But now It is displaying the below error, there is no change in the code not even a single letter. I tried to resolve my issue in the below following ways:
As i know the issue is not with the code and i guess the issue somewhere lies between WebDriver or Chrome Driver configurations
->Updated my chorme driver which i am using in the script to version 81 as my chrome browser is also version 81
->Updated selenium jar to latest version. (with old version also i am facing the same issue and with the new version also i am facing the same issue)
org.openqa.selenium.WebDriverException: unknown error: Runtime.evaluate threw exception: TypeError: Cannot read property 'prototype' of null
at Function.Object.create (https://gom/openiam-ui-static/js/common/openiam.common.js?3.3.1.RELEASE:8:25)
at new CacheWithUUID (<anonymous>:85:24)
at getPageCache (<anonymous>:247:18)
at callFunction (<anonymous>:435:17)
at <anonymous>:464:23
at <anonymous>:465:3
(Session info: chrome=81.0.4044.92)
Driver info: org.openqa.selenium.chrome.ChromeDriver
Capabilities {acceptInsecureCerts: false, browserName: chrome, browserVersion: 81.0.4044.92, chrome: {chromedriverVersion: 81.0.4044.69 (6813546031a4b..., userDataDir: C:\Users38~1\AppData\L...}, goog:chromeOptions: {debuggerAddress: localhost:57252}, javascriptEnabled: true, networkConnectionEnabled: false, pageLoadStrategy: normal, platform: WINDOWS, platformName: WINDOWS, proxy: Proxy(), setWindowRect: true, strictFileInteractability: false, timeouts: {implicit: 0, pageLoad: 300000, script: 30000}, unhandledPromptBehavior: dismiss and notify, webauthn:virtualAuthenticators: true}
Session ID: d75cb3cd1e56a69fa922c007bfe36072
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at org.openqa.selenium.remote.http.W3CHttpResponseCodec.createException(W3CHttpResponseCodec.java:187)
at org.openqa.selenium.remote.http.W3CHttpResponseCodec.decode(W3CHttpResponseCodec.java:122)
at org.openqa.selenium.remote.http.W3CHttpResponseCodec.decode(W3CHttpResponseCodec.java:49)
at org.openqa.selenium.remote.HttpCommandExecutor.execute(HttpCommandExecutor.java:158)
at org.openqa.selenium.remote.service.DriverCommandExecutor.execute(DriverCommandExecutor.java:83)
at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:552)
at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:609)
at org.openqa.selenium.remote.RemoteWebDriver.getTitle(RemoteWebDriver.java:281)
at testclasses.Baseclass.invokeBrowser(Baseclass.java:83)
at testclasses.NewTest.Test1(NewTest.java:31)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:84)
at org.testng.internal.Invoker.invokeMethod(Invoker.java:714)
at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:901)
at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1231)
at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:127)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:111)
at org.testng.TestRunner.privateRun(TestRunner.java:767)
at org.testng.TestRunner.run(TestRunner.java:617)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:334)
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:329)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:291)
at org.testng.SuiteRunner.run(SuiteRunner.java:240)
at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)
at org.testng.TestNG.runSuitesSequentially(TestNG.java:1224)
at org.testng.TestNG.runSuitesLocally(TestNG.java:1149)
at org.testng.TestNG.run(TestNG.java:1057)
at org.testng.remote.AbstractRemoteTestNG.run(AbstractRemoteTestNG.java:115)
at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:251)
at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:77)
===============================================
Default test
Tests run: 1, Failures: 1, Skips: 0
===============================================
===============================================
Default suite
Total tests run: 1, Failures: 1, Skips: 0
===============================================
[TestNG] Time taken by org.testng.reporters.SuiteHTMLReporter@3b6eb2ec: 681 ms
[TestNG] Time taken by org.testng.reporters.JUnitReportReporter@96532d6: 12 ms
[TestNG] Time taken by org.testng.reporters.XMLReporter@7e0ea639: 10 ms
[TestNG] Time taken by org.testng.reporters.jq.Main@34ce8af7: 74 ms
[TestNG] Time taken by org.testng.reporters.EmailableReporter2@2d6e8792: 9 ms
[TestNG] Time taken by [FailedReporter passed=0 failed=0 skipped=0]: 13 ms
Error log points to the if condition below for the script failure
if(driver.getTitle().contains(" MyAccount - Log In"))
{
driver.findElement(By.id("aSsoLogin")).click();
driver.findElement(By.id("username")).clear();
driver.findElement(By.id("username")).sendKeys(prop.getProperty("id"));
driver.findElement(By.id("password")).clear();
driver.findElement(By.id("password")).sendKeys(prop.getProperty("pwd"));
driver.findElement(By.id("submitFrm")).click();
if(driver.getTitle().equalsIgnoreCase("GE Browser Security Check")) {
wait.until(ExpectedConditions.elementToBeClickable(driver.findElement(By.xpath("//*[text()='Remind me later']"))));
driver.findElement(By.xpath("//*[text()='Remind me later']")).click();
}
}
答案1
得分: 0
我找到了问题所在。Chrome浏览器自动更新到了81版本，尽管我使用了81版本的chrome驱动，但是执行失败了。所以我将Chrome浏览器降级到了79版本，并且使用了79版本的chrome驱动来运行Selenium脚本，它成功了。新版本的Chrome浏览器存在问题（80和81版本）。
英文:
I figured out the issue. Chrome browser automatically updated to version 81, though i used chrome driver version 81 it is failing. So i downgraded chrome browser to version 79 and used 79 version of chrome driver to run the selenium script it worked. There are issue with new version of chrome browsers(80 & 81)
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