on windows for work with cairo export you need many dll
freetype6.dll libfontconfig-1.dll libgmodule-2.0-0.dll libiconv-2.dll libpangocairo-1.0-0.dll libpng14-14.dll zlib1.dll
intl.dll libfreetype-6.dll libgobject-2.0-0.dll liblzma-5.dll libpangoft2-1.0-0.dll
libcairo-2.dll libglib-2.0-0.dll libgthread-2.0-0.dll libpango-1.0-0.dll libpangowin32-1.0-0.dll libxml2-2.dll
Instead, you can use lrFclPDFExport