Update app.py

app.py

@@ -222,7 +222,8 @@ def analysis(Manifesto,Search):
   plt.title('Sentiment Analysis')
   plt.xlabel('Sentiment')
   plt.ylabel('Counts')
-  plt.set_facecolor("#2E2E2E")
+  fig, ax = plt.subplots()
+  ax.set_facecolor("#2E2E2E")
   plt.figure(figsize=(4,3))
   df['Analysis on Polarity'].value_counts().plot(kind ='bar')
   plt.tight_layout()