Converter is not implemented (OperationDescription(domain='', operation_type='If', version=16))

[gryffindor-rr]

Installing collected packages: onnx2torch
Successfully installed onnx2torch-1.5.15

model_path='silero_vad.onnx'
import onnx
from onnx2torch import convert

def export_model(model_path):
onnx_model = onnx.load(model_path)
pytorch_model = convert(onnx_model

conversion failed due the the operation 'If' not implemented.
any workaround?