Update app.py

app.py

@@ -145,14 +145,12 @@ def process_and_compare(file1, sheet1, file2, sheet2):
     ax.set_ylabel('Difference')
     plt.xticks(rotation=90)
 
-    # Save plot to BytesIO object
-    buf = io.BytesIO()
-    plt.savefig(buf, format='png', bbox_inches='tight')
-    buf.seek(0)
-    img = buf.getvalue()
-    buf.close()
-
-    return img
+    # Save plot to a file
+    file_path = '/output/plot.png'
+    plt.savefig(file_path, format='png', bbox_inches='tight')
+    plt.close()
+
+    return file_path
 
 
 stored_paragraphs_1 = []