Jython ValueError: chr() arg not in range(256) - jython

Question

I am using Jython (jython2.7.0) to send a string value from a java program to a python method and then return the value to the java program but I get this error. ValueError: chr() arg not in range(256) Do you know what is the cause of the problem and How can I solve it ??
Exception in thread "main" Traceback (most recent call last):
File "PageRanking.py", line 9, in <module>
from bs4 import BeautifulSoup
File "C:\jython2.7.0\Lib\bs4\__init__.py", line 35, in <module>
from .builder import builder_registry, ParserRejectedMarkup
File "C:\jython2.7.0\Lib\bs4\builder\__init__.py", line 7, in <module>
from bs4.element import (
File "C:\jython2.7.0\Lib\bs4\element.py", line 10, in <module>
from bs4.dammit import EntitySubstitution
File "C:\jython2.7.0\Lib\bs4\dammit.py", line 14, in <module>
from html.entities import codepoint2name
File "C:\jython2.7.0\Lib\html\__init__.py", line 6, in <module>
from html.entities import html5 as _html5
File "C:\jython2.7.0\Lib\html\entities.py", line 2507, in <module>
entitydefs[name] = chr(codepoint)
This is my Python code
from __future__ import with_statement
from bs4 import BeautifulSoup
import requests
def pageRank(link):
url = "https://checkpagerank.net/"
payload = {'name':link}
r = requests.post(url, payload)
with open("requests_results.html", "wb") as f:
f.write(r.content)
with open(r'requests_results.html', "r", encoding='utf-8') as f:
text= f.read()
soup = BeautifulSoup(r.text, 'html.parser')
results = soup.find_all('h2')
SResult = results[1]
first= SResult.contents[0]
rankerName = first.find('b').text
second= SResult.contents[2]
rankervalue = second.find('b').text
x = rankervalue[:1]
x = int(x)
x= x*100/10
return x