ERROR: Missing binary: libpng/1.6.37:acc1bd9feeca12810ba1313c4fd8867e201d928f
libpng/1.6.37: WARN: Can't find a 'libpng/1.6.37' package for the specified settings, options and dependencies:
- Settings: arch=x86_64, build_type=Debug, compiler=gcc, compiler.version=9, os=Linux
- Options: api_prefix=None, fPIC=True, shared=False, zlib:fPIC=True, zlib:minizip=False, zlib:shared=False
- Dependencies: zlib/1.2.11
- Requirements: zlib/1.Y.Z
- Package ID: acc1bd9feeca12810ba1313c4fd8867e201d928f

ERROR: Missing prebuilt package for 'libpng/1.6.37'
Try to build from sources with '--build=libpng'
Use 'conan search <reference> --table table.html'
Or read 'http://docs.conan.io/en/latest/faq/troubleshooting.html#error-missing-prebuilt-package'