Can't open browser with Selenium after Firefox update

Question

I use Selenium WebDriver on Ubuntu Desktop 16.04, and I can\'t open browser. I get the following error after Firefox update (before this, it all worked):

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Answer 1

No need to downgrade Firefox. I have faced issue with Windows and Firefox 49 version. I was using geckodrvier 64 bit version. I changed it to geckodrvier 32 bit version and it solved the issue. Now browser is opening properly without any issue.