Source: libpng1.6 Version: 1.6.40-1 Just like symbols file (symbols-file-contains-current-version-with-debian-revision), shlibs should not contain debian revision, please remove it.
For reference: % cat libpng16-16.shlibs libpng16 16 libpng16-16 (>= 1.6.2-1) udeb: libpng16 16 libpng16-16-udeb (>= 1.6.2-1) Thanks
