@@ -0,0 +1,421 @@
+package seedu.taskell.commons.events.storage;%0A%0Aimport seedu.taskell.commons.events.BaseEvent;%0A%0A//@@author A0139257X-reused%0Apublic class DuplicateDataExceptionEvent extends BaseEvent%7B%0A%0A    public Exception exception;%0A%0A    public DuplicateDataExceptionEvent(Exception exception) %7B%0A        this.exception = exception;%0A    %7D%0A%0A    @Override%0A    public String toString()%7B%0A        return exception.toString();%0A    %7D%0A%7D%0A//@@author

Add new event class for duplicate data exception