Ice buildup in the freezer - Whirlpool GI5FVAXVL (249 cu ft) Bottom Freezer French Door Refrigerator

try taking it out and cleaning ice buildup. let it defrost fully again if it doesnt work then a motor needs replacing

Anytime you have ice buildup in back of freezer it indicates that the auto defrost mechanism is not working. Check the defrost timer, heater element, defrost thermostat for proper operation.

Check the vents coming into the frig from the freezer and with the fan in the freezer blowing feel if there is any air blowing into the frig., if not then check for ice buildup in the freezer. sometimes the ice will block the fan and or vents. Defrost if there is frost and ice buildup.

the drain is clogged

If it is not a frost less freezer you'll have to remove perishables to another fridge/freezer; unplug and de-thaw the unit.

Look on the back wall of the freezer for a ice buildup. If there is ice you have a defrost problem. The defrost timer is in the fresh food section inside the control panel.The defrost heater and defrost thermostat are behind the freezer back panel inside the freezer.
Also check the freezer fan. If there is no ice buildup in the freezer the freezer fan motor could be bad.

time to replace the timer and the thermostat

Replace the defrost heater and defrost thermostat in the freezer section. They are located behind the freezer panel.

you will have to unclogg it..hot water/hairdryer..flexible tubing to push out the clog. the ice on evap coil bothers me though. do all the coils get frosty white(close the door for 10 minutes then check) I fear they aren't and you have a freon leak.

Is the trap door flap closing properly where the ice comes through the door? If open, warm air would be coming in frosting and maybe iceing things up