Update app.py

app.py

@@ -2057,8 +2057,8 @@ def from_allow():
         else:
             pr5_data = {}
 
-        if del_flag == '1':
-            pr5_data = {}
+        if del_flag == '1' and module in pr5_data:
+            del pr5_data[module]
         elif module and status:
             pr5_data[module] = status