Using baron solver in Pyomo - pyomo

Question

I tried to solve an optimization problem given in pyomo examples using baron in Ubuntu (Linux).
Example problem:
from pyomo.environ import *
model = ConcreteModel()
model.x = Var(initialize=1.5)
model.y = Var(initialize=1.5)
def rosenbrock(model):
return (1.0-model.x)**2 \
+ 100.0*(model.y - model.x**2)**2
model.obj = Objective(rule=rosenbrock, sense=minimize)
SolverFactory('baron').solve(model, tee=True)
model.pprint()
When I solve the above problem using Baron the following exception is thrown:
BARON version 19.3.24. Built: LNX-64 Sun Mar 24 16:49:54 EDT 2019
BARON is a product of The Optimization Firm.
For information on BARON, see https://minlp.com/about-baron
Exception in thread Thread-23:
Traceback (most recent call last):
File "/usr/lib/python2.7/threading.py", line 801, in
__bootstrap_inner
self.run()
File "/usr/lib/python2.7/threading.py", line 754, in run
self.__target(*self.__args, **self.__kwargs)
File
"/home/user/.local/lib/python2.7/site-packages/pyutilib/subprocess/processmngr.py",
line 367, in _merged_reader
char = s.data.decode(encoding)
File "/usr/lib/python2.7/encodings/utf_8.py", line 16, in decode
return codecs.utf_8_decode(input, errors, True)
UnicodeDecodeError: 'utf8' codec can't decode byte 0xe4 in position 0:
unexpected end of data
When I solve the same problem using ipopt, the problem is solved as expected.
Please let me know how to fix this issue. Let me know if you need any further details.
Thanks in advance
Sakthi