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Can't start selenium grid from my laptop [closed]

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Hi Kagrana,

I was watching you video 'Execute TestNG tests on multiple browsers in parallel'. But failed at the first step.

When I typed the folowing command:

java -jar selenium-server-standalone-2.45.0.jar -role hub

I got error message:

Exception in thread "main" org.openqa.grid.common.exception.GridConfigurationException: The role specified :-hub doesn't

match a recognized role for grid.

Could you explain to me what I did wrong? Thanks so much in advance.

-- a beginner
closed with the note: it's solved
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