TypeError: argument of type 'ValueError' is not iterable in qpsolvers in python

I am new to python optimization using qpsolvers and I have problem with running the following code:

import numpy as np
from qpsolvers import solve_qp

P = np.array([4.,5.,5.,8.]).reshape(2,2)
q = np.array([-3.,2.]).reshape(1,2)[0]
G = np.array([1,1,-2,-3,1,0,0,1,-1,0,0,-1]).reshape(6,2)
h = np.array([2400.,-1100.,1200.,1500.,-300.,0.])
A = None
b = None

sol = solve_qp(P,q,G,h,A,b,solver='quadprog')

I got this error:

sol = solve_qp(P,q,G,h,A,b,solver='quadprog')
  File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/qpsolvers/__init__.py", line 262, in solve_qp
    return quadprog_solve_qp(*args, **kwargs)
  File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/qpsolvers/quadprog_.py", line 90, in quadprog_solve_qp
    if "matrix G is not positive definite" in e:
TypeError: argument of type 'ValueError' is not iterable

I am really not sure what cause the problem. Any help for this will be appreciated. Thanks!