console.log() doesn't work anymore in Firebug since Firefox 51.0.1

Question

I\'ve just updated firefox to a Firefox 51.0.1 (32-bit), and after the update console.log stopped working.

When I am tring to test some JavaScript variables using <

Answer 1

In 2 steps:

1. disable or (better) uninstall Firebug
2. press F12 and enjoy the console and other Devtools

Why: Firebug is not regularly updated anymore, it often becomes obsolete with new FF update. Tools already available in Firefox (F12) are inglobating it.