Invalid or corrupt jar file when trying to start selenium server from intelliJ

There is an open defect in the webdriver-manager project for this issue: https://github.com/angular/webdriver-manager/issues/370

As a temporary workaround you can use the directConnect attribute in your protractor config.

There is issue with 4.0.0-alpha-1 , after deleting files you can install some older versions that will work. If you will just update wevdriver manager by using webdriver-manager update then it will not work for you but you need to use something like " webdriver-manager update --standalone --versions.standalone="some older version"

I found a workaround, which may or may not be acceptable. You can force webdriver-manager to use an older version of the selenium-standalone package. This avoids whatever the problem is with 4.0.0-alpha-1.

$ webdriver-manager clean
$ webdriver-manager update --standalone --versions.standalone=3.8.0
$ webdriver-manager start --versions.standalone=3.8.0
…
[14:19:55] I/start - seleniumProcess.pid: 63863
14:19:55.379 INFO - Selenium build info: version: '3.8.0', revision: '924c4067df'
14:19:55.380 INFO - Launching a standalone Selenium Server
2019-04-24 14:19:55.483:INFO::main: Logging initialized @390ms to org.seleniumhq.jetty9.util.log.StdErrLog