Why has Firefox stopped working?

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Tags

1. #nightly
2. #cause
3. #determined
4. #stopped
5. #signing
6. #turns
7. #version
8. #firefox
9. #desktop
10. #users
11. #certificate
12. #release
13. #mozilla
14. #channels
15. #expired
16. #reason
17. #working
18. #problem
19. #developed
20. #having