I follow your guide to install paddle on Pi 4 (https://qengineering.eu/install-paddlepaddle-on-raspberry-pi-4.html)
After the installation, you say in order to check if everything is ok, to launch

python3
import paddle.fluid as pd

At this point a get this error

Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/local/lib/python3.9/dist-packages/paddle/__init__.py", line 25, in <module>
from .framework import monkey_patch_variable
File "/usr/local/lib/python3.9/dist-packages/paddle/framework/__init__.py", line 17, in <module>
from . import random # noqa: F401
File "/usr/local/lib/python3.9/dist-packages/paddle/framework/random.py", line 16, in <module>
import paddle.fluid as fluid
File "/usr/local/lib/python3.9/dist-packages/paddle/fluid/__init__.py", line 36, in <module>
from . import framework
File "/usr/local/lib/python3.9/dist-packages/paddle/fluid/framework.py", line 35, in <module>
from .proto import framework_pb2
File "/usr/local/lib/python3.9/dist-packages/paddle/fluid/proto/framework_pb2.py", line 33, in <module>
_descriptor.EnumValueDescriptor(
File "/home/pi/.local/lib/python3.9/site-packages/google/protobuf/descriptor.py", line 796, in __new__
_message.Message._CheckCalledFromGeneratedFile()
TypeError: Descriptors cannot not be created directly.
If this call came from a _pb2.py file, your generated code is out of date and must be regenerated with protoc >= 3.19.0.
If you cannot immediately regenerate your protos, some other possible workarounds are:
1. Downgrade the protobuf package to 3.20.x or lower.
2. Set PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=python (but this will use pure-Python parsing and will be much slower).

More information: https://developers.google.com/protocol-buffers/docs/news/2022-05-06#python-updates

Is the installation successfull or not? How can I fix it?
Thanks in advance