issue on publishDate code

[Funkytowel]

Exception in thread Thread-6:
Traceback (most recent call last):
File "/Users/1111/anaconda3/lib/python3.6/threading.py", line 916, in _bootstrap_inner
self.run()
File "/Users/1111/anaconda3/lib/python3.6/site-packages/NaverBlogCrawler/NaverBlogCrawler.py", line 127, in run
postingCrawler.run()
File "/Users/1111/anaconda3/lib/python3.6/site-packages/NaverBlogCrawler/NaverBlogPostCrawler.py", line 113, in run
self.postSetup()
File "/Users/1111/anaconda3/lib/python3.6/site-packages/NaverBlogCrawler/NaverBlogPostCrawler.py", line 61, in postSetup
self.postDate = self.getPostDate()
File "/Users/1111/anaconda3/lib/python3.6/site-packages/NaverBlogCrawler/NaverBlogPostCrawler.py", line 85, in getPostDate
publishDate = re.search(publishDateRegExpr, publishDate).group()
AttributeError: 'NoneType' object has no attribute 'group'

Tested in OSX