Here is the problem:
Traceback (most recent call last):
File “app.py”, line 52, in 
from system.model_optimization.optimization import create_database_table, extract_database_stock, extract_database_rf
File “/Users/zhangshan/Documents/FRE_Project/FRE_Platform/system/model_optimization/optimization.py”, line 2, in 
from pypfopt.efficient_frontier import EfficientFrontier
File “/Users/zhangshan/Documents/FRE_Project/FRE_Platform/venv/lib/python3.7/site-packages/pypfopt/init.py”, line 1, in 
from .black_litterman import (
File “/Users/zhangshan/Documents/FRE_Project/FRE_Platform/venv/lib/python3.7/site-packages/pypfopt/black_litterman.py”, line 13, in 
from . import base_optimizer
File “/Users/zhangshan/Documents/FRE_Project/FRE_Platform/venv/lib/python3.7/site-packages/pypfopt/base_optimizer.py”, line 14, in 
import cvxpy as cp
File “/Users/zhangshan/Documents/FRE_Project/FRE_Platform/venv/lib/python3.7/site-packages/cvxpy/init.py”, line 18, in 
from cvxpy.atoms import *
File “/Users/zhangshan/Documents/FRE_Project/FRE_Platform/venv/lib/python3.7/site-packages/cvxpy/atoms/init.py”, line 20, in 
from cvxpy.atoms.geo_mean import geo_mean
File “/Users/zhangshan/Documents/FRE_Project/FRE_Platform/venv/lib/python3.7/site-packages/cvxpy/atoms/geo_mean.py”, line 20, in 
from cvxpy.utilities.power_tools import (fracify, decompose, approx_error, lower_bound,
File “/Users/zhangshan/Documents/FRE_Project/FRE_Platform/venv/lib/python3.7/site-packages/cvxpy/utilities/power_tools.py”, line 18, in 
from cvxpy.atoms.affine.reshape import reshape
File “/Users/zhangshan/Documents/FRE_Project/FRE_Platform/venv/lib/python3.7/site-packages/cvxpy/atoms/affine/reshape.py”, line 18, in 
from cvxpy.atoms.affine.hstack import hstack
File “/Users/zhangshan/Documents/FRE_Project/FRE_Platform/venv/lib/python3.7/site-packages/cvxpy/atoms/affine/hstack.py”, line 19, in 
from cvxpy.atoms.affine.affine_atom import AffAtom
File “/Users/zhangshan/Documents/FRE_Project/FRE_Platform/venv/lib/python3.7/site-packages/cvxpy/atoms/affine/affine_atom.py”, line 22, in 
from cvxpy.cvxcore.python import canonInterface
File “/Users/zhangshan/Documents/FRE_Project/FRE_Platform/venv/lib/python3.7/site-packages/cvxpy/cvxcore/python/init.py”, line 3, in 
import _cvxcore
ImportError: dlopen(/Users/zhangshan/Documents/FRE_Project/FRE_Platform/venv/lib/python3.7/site-packages/_cvxcore.cpython-37m-darwin.so, 2): Library not loaded: @rpath/libc++.1.dylib
Referenced from: /Users/zhangshan/Documents/FRE_Project/FRE_Platform/venv/lib/python3.7/site-packages/_cvxcore.cpython-37m-darwin.so
Reason: image not found
My PC is MacOS by the way.
Any ideas?