Vauxhall Zafira zafira b rear side light not working

Check / replace the bulbs first , check the bulb contacts and for power at bulbs , check earths

many thanks for the advise, i did change all the bulbs and the problem is still there , the near side side light still not working and the brake light still flickers and goes off , yet indicator and reverse lights all work ok yet the off side lights work perfect . any more solution please ?

Is it the rear tail light that is not working or the front side light / Tail light is at rear side light is at front

rear tail light near side, replaced all bulbs indicators and reversing light working fine , off side tail lights all working perfect

Change the bulbs from o/s to n/s and see if it works . Double check it is correct bulbs fitted

Tail Lamp - P21W (382)

Stop Lamp - P21W (382)

Rear Fog Lamp - P21W (382)

Reversing Lamp - P21W (382)

Rear Indicator - P21W (382)