How to solve the problem of not finding the model at startup ？

[ohm-zx]

ModuleNotFoundError: No module named 'cpp_utils_ext'
Traceback (most recent call last):
File "web_backend/server.py", line 36, in <module>
from perception_server import PerceptionServer
File "/home/nvidia/znqc/work/lidar-slam-detection/web_backend/perception_server.py", line 5, in <module>
from jsonrpc.backend.flask import api
ModuleNotFoundError: No module named 'jsonrpc.backend'

[w111liang222]

Hi

1. did you run the 'python setup.py install' before startup, the cpp_utils_ext is a cpp extension package in this project
2. 'pip install json-rpc' to install the jsonrpc module

[ohm-zx]

Thanks，i also want to ask the following question
ModuleNotFoundError: No module named 'zerocm'

[w111liang222]

Thanks，i also want to ask the following question ModuleNotFoundError: No module named 'zerocm'

'./tools/scripts/install_dependency.sh' to install the python extension of zcm

[ohm-zx]

Thanks，please help me look the following question
[Errno 13] Permission denied: '/home/znqc/work/licence/licences'
Traceback (most recent call last):
File "web_backend/server.py", line 48, in <module>
@app.before_first_request
AttributeError: 'Flask' object has no attribute 'before_first_request'

[w111liang222]

Thanks，please help me look the following question [Errno 13] Permission denied: '/home/znqc/work/licence/licences' Traceback (most recent call last): File "web_backend/server.py", line 48, in @app.before_first_request AttributeError: 'Flask' object has no attribute 'before_first_request'

please use the 2.x version of flask
pip install flask==2.2.2 flask_cors==3.0.10
==1.9.3 filterpy==1.4.5 shapely==1.8.5.post1 python-can==4.0.0 onnx==1.12.0 gevent==22.10.1 websockets==10.4 zerorpc==0.6.3 flask_socketio==5.3.1 gevent-websocket==0.10.1 Werkzeug==2.2.2