Toyota Yaris Headlights Problems

hello my wife has a Toyota yaris and the front fog lights wont come on' there in the bumper' the switch is on the stork and you just twist 'I can hear the relay click as the switch is turned 'iv checked the fuses all ok 'just wont come on '...

The dipped and main beam headlights are not coming on, fog lights, sidelights and indicators are all working