Chili Publisher: Downloads with wrong FileExtension

Note: In some installations there were cases where files with an ‘aspx’ extension instead of a pdf extension were created when downloading PDF files.
The problem was found and fixed in the following version 
enobis/module-chili-editor version 3.1.16
If you encounter this problem, please update the enobis/modul-chili-editor to a version >= 3.1.16