Vader returning not accurate result

[ImSanjayChintha]

I am trying to pass a statement 'Nothing, Everything is great.' to vader, it is actually returning as 'Negative' but it is actually 'Positive' statment.

from vaderSentiment.vaderSentiment import SentimentIntensityAnalyzer
analyser = SentimentIntensityAnalyzer()

def sentiment_analyzer_scores(sentence):
score = analyser.polarity_scores(sentence)
#max_key = max(score, key=score.get)
#print(status[max_key], score[max_key] * 100)
if(score['compound'] >= 0.05):
return 'Positive'
elif (score['compound'] > -0.05 and score['compound'] < 0.05):
return 'Neutral'
elif (score['compound'] <= -0.05):
return 'Negative'
else:
return 'None'

sentiment_analyzer_scores("Nothing. Everything is great") // Returns Negative, but it is actually positive statement.