There is a problem with adding new data to training log. When I add new data and press "Load Index Diagram" it shows "Your session has expired, please login in again" . And all new added data is lost.
Not sure this is the right place for this. In the training log it does not appear that you are sanitizing or escaping the input. For example using an apostrophe in the comment area will break the sql query. In addition you are showing error strings. For a production server this is potentially unsafe and allows an attacker to get a lot of information about the application.
training log