Invalid parameter file name.

import mxnet as mx
import numpy as np
import sys
import os
import argparse
import onnx
 
print('mxnet version:', mx.__version__)
print('onnx version:', onnx.__version__)
 
from mxnet.contrib import onnx as onnx_mxnet
 
from onnx import checker
 
 
syms   = './mnist-symbol.json'
params = './mnist-0000.params'
 
input_shape = (1,3,112,112)
 
onnx_file = './mnist.onnx'
 
# Invoke export model API. It returns path of the converted onnx model
converted_model_path = onnx_mxnet.export_model(syms, params, [input_shape], np.float32, onnx_file)

Finally, it is found that the parameter file name is wrongly written, “-” and “” I don’t know.