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Exception: json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

See original GitHub issue

I have been using icrawler to scrap some images from Google Search. I have used this code,

from icrawler.builtin import GoogleImageCrawler

keyword = 'elon_musk'
num_images =   200
output_directory = 'dataset/images'

google_crawler = GoogleImageCrawler(storage={ 'root_dir': output_directory})
google_crawler.crawl(keyword=keyword, max_num=num_images , filters=None )

The execution ends with this exception,

Exception in thread parser-001:
Traceback (most recent call last):
  File "/usr/lib/python3.6/threading.py", line 916, in _bootstrap_inner
    self.run()
  File "/usr/lib/python3.6/threading.py", line 864, in run
    self._target(*self._args, **self._kwargs)
  File "/usr/local/lib/python3.6/dist-packages/icrawler/parser.py", line 104, in worker_exec
    for task in self.parse(response, **kwargs):
  File "/usr/local/lib/python3.6/dist-packages/icrawler/builtin/google.py", line 157, in parse
    meta = json.loads(txt)
  File "/usr/lib/python3.6/json/__init__.py", line 354, in loads
    return _default_decoder.decode(s)
  File "/usr/lib/python3.6/json/decoder.py", line 339, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/usr/lib/python3.6/json/decoder.py", line 357, in raw_decode
    raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

I am using icrawler in Google Colab hence with Python version 3.6.9 on Google Chrome browser.