Unable to export lar file , getting white page

[11年前 に Glory test によって更新されました。]

The application is 3 years old and now I want to take the lar export , which I am unable to do.I am able to take a lar export without Data option .But having the data option I am getting a white page.I have tried to create lar for the last 7 days data still failed.
I am using Liferay 5.2.x