Exporting space to PDF where the page contains toc macro, produces error message

Exporting space to PDF produces nullPointerException in the PDF file.

The steps to reproduce:

1. Create a page contains the following content:

   {toc}
   h1. test1
   
   
   h1. test2
   
   
   h1. test3
   

2. Export space where the page belongs to PDF.

the result is as attached.