After upgrading from 24 to 25 version, the following command "soffice --headless --convert-to pdf...." produce empty PDF file for .svg, .emf and .emz image formats. The above image formats can't be converted to PDF using 25.2.4.3 version but works ok in version 24.8.
*** This bug has been marked as a duplicate of bug 167531 ***
For exact accidental duplicates we use invalid status to not inflate statistics.