（已经在issues里找过一圈答案了没有解决）faster_rcnn 转onnx 提示there are some operators not supported yet, including distribute_fpn_proposals,generate_proposals_v2 about paddle2onnx

[zhjian831129]

如下是把-enable_dev_version 设为False的提示
运行命令：
! paddle2onnx --model_dir inference_model/faster_rcnn_r34_fpn_1x_coco
--model_filename model.pdmodel
--params_filename model.pdiparams
--opset_version 16
--enable_dev_version False
--save_file final.onnx
错误提示：
2024-01-04 11:28:48 [WARNING] [Deprecated] paddle2onnx.command.program2onnx will be deprecated in the future version, the recommended usage is paddle2onnx.export
Traceback (most recent call last):
File "/opt/conda/envs/python35-paddle120-env/bin/paddle2onnx", line 8, in
sys.exit(main())
File "/opt/conda/envs/python35-paddle120-env/lib/python3.7/site-packages/paddle2onnx/command.py", line 253, in main
auto_update_opset=args.enable_auto_update_opset)
File "/opt/conda/envs/python35-paddle120-env/lib/python3.7/site-packages/paddle2onnx/command.py", line 168, in program2onnx
from paddle2onnx.legacy.command import program2onnx
File "/opt/conda/envs/python35-paddle120-env/lib/python3.7/site-packages/paddle2onnx/legacy/init.py", line 19, in
from .convert import dygraph2onnx, program2onnx
File "/opt/conda/envs/python35-paddle120-env/lib/python3.7/site-packages/paddle2onnx/legacy/convert.py", line 23, in
from paddle2onnx.legacy.graph import PaddleGraph, ONNXGraph
File "/opt/conda/envs/python35-paddle120-env/lib/python3.7/site-packages/paddle2onnx/legacy/graph/init.py", line 17, in
from .onnx_graph import ONNXGraph, ONNXNode
File "/opt/conda/envs/python35-paddle120-env/lib/python3.7/site-packages/paddle2onnx/legacy/graph/onnx_graph.py", line 22, in
from paddle2onnx.legacy.constant import NodeDomain, PRODUCER, dtypes
File "/opt/conda/envs/python35-paddle120-env/lib/python3.7/site-packages/paddle2onnx/legacy/constant/dtypes.py", line 17, in
from onnx import helper
ModuleNotFoundError: No module named 'onnx'