Left side indicators.front and back .could anyone suggest how to fix it ? Thanks in advance

 

I see the question. I don’t understand the issue. Change bulbs? Check grounds? Replace relay?

 

The whole left side blinkers are not working . Front back and side.ive noticed the issue before but it worked the first time and then it would show the indicator failure and it wouldn’t work until I start the car again.
but it’s been some time now that the blinkers don’t work at all anymore.it immediately recognises the left indicator failure and I am trying to register the car and drive it as soon as possible. If there is something I should check myself and quickly fix let me know.