嗨，任何人都知道这是怎么回事或如何调试以下错误。我所做的步骤是使用安装中心命令并将节点注册到中心。在命令注册节点之后。我可以看到日志为

The node is registered to the hub and ready to use

但是，当我运行测试脚本时，出现以下错误：

selenium.common.exceptions.SessionNotCreatedException: Message: Unable to create new service: ChromeDriverService

二进制版本：

• selenium独立版本：3.14.0
• selenium远程驱动程序版本：selenium== 3.14.1
• python版本：3.6.4

脚本：

import os
from selenium import webdriver
from selenium.webdriver.common.desired_capabilities import DesiredCapabilities

driver = webdriver.Remote(command_executor='http://localhost:4444/wd/hub',
                          desired_capabilities=DesiredCapabilities.CHROME)

设置中心：

#java -jar /Users/admin/selenium-server-standalone-3.14.0.jar -host localhost -role hub

注册节点：

#java -jar /Users/admin/selenium-server-standalone-3.14.0.jar -role node

错误：

E       selenium.common.exceptions.SessionNotCreatedException: Message: Unable to create new service: ChromeDriverService
E       Build info: version: '3.14.0', revision: 'aacccce0', time: '2018-08-02T20:13:22.693Z'
E       Driver info: driver.version: unknown
E       Stacktrace:
E           at org.openqa.selenium.remote.server.ServicedSession$Factory.lambda$get$0 (ServicedSession.java:134)
E           at org.openqa.selenium.remote.server.ServicedSession$Factory.apply (ServicedSession.java:151)
E           at org.openqa.selenium.remote.server.ActiveSessionFactory.lambda$apply$12 (ActiveSessionFactory.java:177)
E           at java.util.stream.ReferencePipeline$3$1.accept (ReferencePipeline.java:193)
...
E           at java.util.concurrent.Executors$RunnableAdapter.call (Executors.java:511)
E           at java.util.concurrent.FutureTask.run (FutureTask.java:266)
E           at java.util.concurrent.ThreadPoolExecutor.runWorker (ThreadPoolExecutor.java:1142)
E           at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:617)
E           at java.lang.Thread.run (Thread.java:745)

../lib/python3.6/site-packages/selenium/webdriver/remote/errorhandler.py:242: SessionNotCreatedException