org.openqa.selenium.NoSuchSessionException: Tried to run command without establishing a connection(Selenium 4.0.0 and Selenium 4.1.2)

[dineshkumar-kanniyammal]

org.openqa.selenium.NoSuchSessionException: Tried to run command without establishing a connection

1.Selenium 4.0.0 jar
2.Firefox 95 verision brower
3.gecko driver v0.30.0
4.600 sessions
5.tried both Selenium 4.1.2 and Selenium 4.0.0

this problem occured while running parallel firefox browser testing.it not reproducing my local machine too
.Can anyone help?

@fhoeben

Originally posted by @dineshkumar-kanniyammal in #340 (comment)

[fhoeben]

Which version on the fixtures are you using (since we never supported selenium 4.0.0)?

Can you describe the setup 'parallel firefox browser testing'? Which processes/machines are involved (I don't suppose you can run 600 firefox instances on a single machine).