change password

Someone had the same problem with this Pierre´s solution custom-Page-ChangePassword?

Hi, I have a problem with this very good page and I do not know why the error is happening.

When install the Page-ChangePassword in bonitasoft 7.5.4 developer in localhost Windows its work fine but when I install in Bonitasoft Production Server at Linux this shows the blank page.

Thank you for the help