Update app.py

app.py

@@ -163,8 +163,8 @@ def show_length_graph():
     rects1 = ax.bar(x - width/2, original_length, width,  color='lightgreen',zorder=0)
     rects2 = ax.bar(x + width/2, summarized_length, width, color='lightblue',zorder=0)
    
-    rects3 = ax.bar(x - width/2, original_length, width, color='none',edgecolor='black', hatch='XX', lw=1.25,zorder=1)
-    rects4 = ax.bar(x + width/2, summarized_length, width, color='none',edgecolor='black', hatch='xx', lw=1.25,zorder=1)
+    rects3 = ax.bar(x - width/2, original_length, width, color='none',edgecolor='black', lw=1.25,zorder=1)
+    rects4 = ax.bar(x + width/2, summarized_length, width, color='none',edgecolor='black', lw=1.25,zorder=1)
     
     # Add some text for labels, title and custom x-axis tick labels, etc.
     ax.set_ylabel('Text Length')