If I don't solve this, I can't graduate. Please help me

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Briefly, there is no cooling load in the space where the error cooling coil is located.

VRF ZONE TERMINAL COOLING COIL 3 is for the space Space 200(waitingroom) with a floor area of 3645m2.

It looks the space is located underground, but you don't specify Ground Temperature. Then, the default value of 18C is used. The cooling setpoint in the space is 28C. The roof, floor and wall are 200mm concrete without insulation. The internal heat goes outside (the space is cooled).

The internal heat gain in the space is People only. (67 People) x (Activity level 69W) = 4623W. It is only 1W/m2. There is no lighting, no equipment load, no outdoor air, no infiltration. If you expect lighting and equipment load in the space, please double-check the SpaceList Name you assigned to the Lights and OtherEquipment objects.

You will be able to run simulation if you add equipment load to the space, for example 50W/m2.

You hardsized the cooling coil capacity (100kW), but are trying to autosize the airflow rate. You will be able to run simulation if you properly hardsize the airflow rate, for example 10m3/s. However, the cooling coil will not cool the space without enough cooling load.

If all the inputs in your model are correct and there is no actual cooling load in the space, you should delete the VRF for the space.