驱动程序：geckodriver 0.19.1。
OS名称：Microsoft Windows 10 Pro for Workstations版本：10.0.17134 Build 17134。
Firefox：63.0（64位）。
使用TestNG版本6.14.0运行测试。
直到今天早上，一切正常。没有可察觉的Windows更新。
今天，浏览器闪烁并再次消失。 显示以下输出：
1540896320791 geckodriver INFO geckodriver 0.19.1
1540896320798 geckodriver INFO Listening on 127.0.0.1:21199
1540896321526 mozrunner::runner INFO Running command: "C:\\Program Files\\Mozilla Firefox\\firefox.exe" "-marionette" "-profile" "C:\\Users\\SStaple\\AppData\\Local\\Temp\\rust_mozprofile.3QimwYbs08Pl"
1540896322004 Marionette DEBUG Received observer notification profile-after-change
1540896322106 Marionette DEBUG Received observer notification toplevel-window-ready
1540896322129 Marionette DEBUG Received observer notification command-line-startup
1540896322130 Marionette DEBUG Received observer notification nsPref:changed
1540896322130 Marionette DEBUG Init aborted (running=false, enabled=true, finalUIStartup=false)
1540896322284 Marionette DEBUG Received observer notification toplevel-window-ready
1540896323003 Marionette DEBUG Received observer notification sessionstore-windows-restored
1540896323003 Marionette DEBUG Waiting for delayed startup...
1540896323080 Marionette DEBUG Setting recommended pref app.update.disabledForTesting to true
1540896323081 Marionette DEBUG Setting recommended pref security.turn_off_all_security_so_that_viruses_can_take_over_this_computer to true
1540896323082 Marionette DEBUG Setting recommended pref toolkit.cosmeticAnimations.enabled to false
1540896323083 Marionette DEBUG Setting recommended pref datareporting.policy.dataSubmissionPolicyAccepted to false
1540896323083 Marionette DEBUG Setting recommended pref dom.disable_beforeunload to true
1540896323117 Marionette INFO Listening on port 51662
1540896323117 Marionette DEBUG Remote service is active
1540896323562 Marionette DEBUG Accepted connection 0 from 127.0.0.1:51667
1540896323566 Marionette TRACE 0 -> [0,1,"newSession",{"acceptInsecureCerts":true,"browserName":"firefox","capabilities":{"desiredCapabilities":{"acceptInsecureCerts":true,"browserName":"firefox"}}}]
1540896323566 Marionette TRACE 0 <- [1,1,{"error":"unknown command","message":"newSession","stacktrace":"WebDriverError@chrome://marionette/content/error.js:178: ... et@chrome://marionette/content/server.js:245:8\n_onJSONObjectReady/<@chrome://marionette/content/transport.js:490:9\n"},null]
Oct 30, 2018 10:45:23 AM org.openqa.selenium.remote.ErrorCodes toStatus
INFO: HTTP Status: '404' -> incorrect JSON status mapping for 'unknown error' (500 expected)
crossBrowserFramework.Driver error code: 1540893399 Error getting firefox driver. C:\Development\Alloy-Test\web-client\src\drivers\geckodriver.exe could not be found.
org.openqa.selenium.WebDriverException: newSession
Build info: version: '3.8.1', revision: '6e95a6684b', time: '2017-12-01T19:05:32.194Z'
System info: host: 'SSTAPLE', ip: '172.16.190.147', os.name: 'Windows 10', os.arch: 'amd64', os.version: '10.0', java.version: '1.8.0_151'
Driver info: driver.version: Driver
remote stacktrace: WebDriverError@chrome://marionette/content/error.js:178:5
UnknownCommandError@chrome://marionette/content/error.js:472:5
despatch@chrome://marionette/content/server.js:290:13
execute@chrome://marionette/content/server.js:271:11
onPacket/<@chrome://marionette/content/server.js:246:15
onPacket@chrome://marionette/content/server.js:245:8
_onJSONObjectReady/<@chrome://marionette/content/transport.js:490:9
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.W3CHandshakeResponse.lambda$new$0(W3CHandshakeResponse.java:57)
at org.openqa.selenium.remote.W3CHandshakeResponse.lambda$getResponseFunction$2(W3CHandshakeResponse.java:104)
at org.openqa.selenium.remote.ProtocolHandshake.lambda$createSession$0(ProtocolHandshake.java:123)
at java.util.stream.ReferencePipeline$3$1.accept(Unknown Source)
at java.util.Spliterators$ArraySpliterator.tryAdvance(Unknown Source)
at java.util.stream.ReferencePipeline.forEachWithCancel(Unknown Source)
at java.util.stream.AbstractPipeline.copyIntoWithCancel(Unknown Source)
at java.util.stream.AbstractPipeline.copyInto(Unknown Source)
at java.util.stream.AbstractPipeline.wrapAndCopyInto(Unknown Source)
at java.util.stream.FindOps$FindOp.evaluateSequential(Unknown Source)
at java.util.stream.AbstractPipeline.evaluate(Unknown Source)
at java.util.stream.ReferencePipeline.findFirst(Unknown Source)
at org.openqa.selenium.remote.ProtocolHandshake.createSession(ProtocolHandshake.java:126)
at org.openqa.selenium.remote.ProtocolHandshake.createSession(ProtocolHandshake.java:73)
at org.openqa.selenium.remote.HttpCommandExecutor.execute(HttpCommandExecutor.java:142)
at org.openqa.selenium.remote.service.DriverCommandExecutor.execute(DriverCommandExecutor.java:83)
at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:601)
at org.openqa.selenium.remote.RemoteWebDriver.startSession(RemoteWebDriver.java:219)
at org.openqa.selenium.remote.RemoteWebDriver.<init>(RemoteWebDriver.java:142)
at org.openqa.selenium.firefox.FirefoxDriver.<init>(FirefoxDriver.java:120)
at crossBrowserFramework.Driver.getFirefoxDriver(Driver.java:114)
at crossBrowserFramework.Driver.initialise(Driver.java:61)
at crossBrowserFramework.CrossBrowserTest.initialiseDriver(CrossBrowserTest.java:598)
at crossBrowserFramework.CrossBrowserTest.beforeSuite(CrossBrowserTest.java:174)
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:124)
at org.testng.internal.MethodInvocationHelper.invokeMethodConsideringTimeout(MethodInvocationHelper.java:59)
at org.testng.internal.Invoker.invokeConfigurationMethod(Invoker.java:451)
at org.testng.internal.Invoker.invokeConfigurations(Invoker.java:222)
at org.testng.internal.Invoker.invokeConfigurations(Invoker.java:142)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:401)
at org.testng.SuiteRunner.run(SuiteRunner.java:364)
at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:84)
at org.testng.TestNG.runSuitesSequentially(TestNG.java:1198)
at org.testng.TestNG.runSuitesLocally(TestNG.java:1127)
at org.testng.TestNG.runSuites(TestNG.java:1039)
at org.testng.TestNG.run(TestNG.java:1007)
at org.testng.remote.AbstractRemoteTestNG.run(AbstractRemoteTestNG.java:114)
at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:251)
at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:77)
我不知道Firefox上一次更新的时间，但这可能是罪魁祸首。 有什么想法吗？
答案 0 :(得分：2)
最新的gecko驱动程序是v0.23.0，请尝试对其进行更新。