Traulsen g10010 troubleshooting

Don't know this maker or model but if it is constructed like most modern units, the evaporator is under the bottom of the refrigerator and uses a fan to circulate air past it to dispose of heat taken from inside.
If this fan fails, either completely or because of excessive dust, the coolant is circulating via the compressor but the removed heat from the inside is not being removed from the evaporator.
Check for the presence and operation of this fan.
If failed, it can cause the problem you are having.
Most are accessible from the rear of the unit and are plugged in to permanent wiring so replacement might be quite easy.