UnicodeEncodeError: 'ascii' codec can't encode character

[kaustubhd93]

Steps to reproduce this issue:

• Run the docker image with sample4 as file for testing

2020-06-25 17:58:39 [scrapy.core.scraper] ERROR: Spider error processing <GET https://teleshow.wp.pl/ads.txt> (referer: None)
Traceback (most recent call last):
  File "/usr/local/lib/python3.5/dist-packages/twisted/internet/defer.py", line 654, in _runCallbacks
    current.result = callback(current.result, *args, **kw)
  File "/app/adstxt/adstxt/spiders/adstxt_spider.py", line 28, in parse
    adstxtcrawler.get_ads_txt(domain, response.body)
  File "/app/adstxt/adstxt/spiders/adstxtparser/parsers/adstxtcrawler.py", line 56, in get_ads_txt
    hlp.write_to_csv(adstxt["adstxt"],fileName=domain,fieldNames=["partner","pubId","relation","tagId"])
  File "/app/adstxt/adstxt/spiders/adstxtparser/parsers/helper.py", line 43, in write_to_csv
    writer.writerow(info)
  File "/usr/lib/python3.5/csv.py", line 153, in writerow
    return self.writer.writerow(self._dict_to_list(rowdict))
UnicodeEncodeError: 'ascii' codec can't encode character '\ufffd' in position 40: ordinal not in range(128)
2020-06-25 17:58:39 [adstxt] ERROR: <twisted.python.failure.Failure scrapy.spidermiddlewares.httperror.HttpError: Ignoring non-200 response>
2020-06-25 17:58:40 [scrapy.core.scraper] ERROR: Spider error processing <GET https://komorkomania.pl/ads.txt> (referer: None)
Traceback (most recent call last):
  File "/usr/local/lib/python3.5/dist-packages/twisted/internet/defer.py", line 654, in _runCallbacks
    current.result = callback(current.result, *args, **kw)
  File "/app/adstxt/adstxt/spiders/adstxt_spider.py", line 28, in parse
    adstxtcrawler.get_ads_txt(domain, response.body)
  File "/app/adstxt/adstxt/spiders/adstxtparser/parsers/adstxtcrawler.py", line 56, in get_ads_txt
    hlp.write_to_csv(adstxt["adstxt"],fileName=domain,fieldNames=["partner","pubId","relation","tagId"])
  File "/app/adstxt/adstxt/spiders/adstxtparser/parsers/helper.py", line 43, in write_to_csv
    writer.writerow(info)
  File "/usr/lib/python3.5/csv.py", line 153, in writerow
    return self.writer.writerow(self._dict_to_list(rowdict))
UnicodeEncodeError: 'ascii' codec can't encode character '\ufffd' in position 40: ordinal not in range(128)