Warning: No conversion function registered for layer: AddV2 yet.

Hello.

I tried to convert tensorflow .pb model to .uff using “convert-to-uff”.
But TensorRT doesn’t support tf.add() then “Warning: No conversion function registered for layer: AddV2 yet.” is occured.
Must I develop custom layer like this page(https://docs.nvidia.com/deeplearning/sdk/tensorrt-developer-guide/index.html#using_custom_layer)?
Or is there other solutions?