title: missing data in pandas profiling report
body: <p>I am using Python 2.7 and Pandas Profiling to generate a report out of a dataframe. Following is my code:</p>
  
  <pre><code>import pandas as pd
  import pandas_profiling
  
  # the actual dataset is very large, just providing the two elements of the list 
  data = [{'polarity': 0.0, 'name': u'danesh bhopi', 'sentiment': 'Neutral', 'tweet_id': 1049952424818020353, 'original_tweet_id': 1049952424818020353, 'created_at': Timestamp('2018-10-10 14:18:59'), 'tweet_text': u"Wouldn't mind aus 120 all-out but before that would like to see a Finch \U0001f4af #PakVAus #AUSvPAK", 'source': u'&lt;a href="http://twitter.com/download/android" rel="nofollow"&gt;Twitter for Android&lt;/a&gt;', 'location': u'pune', 'retweet_count': 0, 'geo': '', 'favorite_count': 0, 'screen_name': u'DaneshBhope'}, {'polarity': 1.0, 'name': u'kamal Kishor parihar', 'sentiment': 'Positive', 'tweet_id': 1049952403980775425, 'original_tweet_id': 1049952403980775425, 'created_at': Timestamp('2018-10-10 14:18:54'), 'tweet_text': u'@the_summer_game What you and Australia think\nPlay for\n win \nDraw\n or....! #PakvAus', 'source': u'&lt;a href="http://twitter.com/download/android" rel="nofollow"&gt;Twitter for Android&lt;/a&gt;', 'location': u'chembur Mumbai ', 'retweet_count': 0, 'geo': '', 'favorite_count': 0, 'screen_name': u'kaluparihar1'}]
  df = pd.DataFrame(data) #data is a python list containing python dictionaries
  pfr = pandas_profiling.ProfileReport(df)
  pfr.to_file("df_report.html") 
  </code></pre>
  
  <p>The screenshot of the part of the df_report.html file is below:<a href="https://i.stack.imgur.com/FJvQX.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/FJvQX.png" alt="enter image description here"></a></p>
  
  <p>As you can see in the image, the Unique(%) field in all the variables is 0.0 although the columns have unique values.</p>
  
  <p>Apart from this, the chart in the 'location' variable is broken. There is no bar for the values 22, 15, 4 and the only bar is for the maximum value only. This is happening in all the variables.</p>
  
  <p>Any help would be appreciated. </p>