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Firefox window closes on Mac. Can't open it or go to its settings

Firefox Launch failure
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For some reason every time I open Firefox the window closes. I can see it's open on my dock, but if I click on it, the window opens and closes again. It's so fast I can't even go to the setting for Firefox. Anyone knows what's going on?

For some reason every time I open Firefox the window closes. I can see it's open on my dock, but if I click on it, the window opens and closes again. It's so fast I can't even go to the setting for Firefox. Anyone knows what's going on?

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NEvermind, found the solution