plot emotions with 0 frequency

app.py

@@ -101,7 +101,8 @@ def plot_emotion_heatmap(heatmap_data):
 def plot_emotion_barplot(heatmap_data):
     most_probable_emotions = heatmap_data.idxmax(axis=0)
     emotion_counts = most_probable_emotions.value_counts()
-    emotion_frequencies = (emotion_counts / emotion_counts.sum()).sort_values(ascending=False)
+    all_emotions = heatmap_data.index
+    emotion_frequencies = (emotion_counts.reindex(all_emotions, fill_value=0) / emotion_counts.sum()).sort_values(ascending=False)
     fig, ax = plt.subplots(figsize=(8, 6))
     sns.barplot(x=emotion_frequencies.values, y=emotion_frequencies.index, palette="coolwarm", ax=ax)
     ax.set_title("Relative Frequencies of Most Probable Emotions")