Heroku-18 stack failure

[dbinetti]

Now incompatible with Heroku-18.

RuntimeError: error running wkhtmltopdf, command: ['--cache-dir', '/tmp/pydf_cache', '--margin-bottom', '5mm', '--margin-top', '5mm', '--orientation', 'Portrait', '--page-size', 'Legal', '-', '-']
response: "/app/.heroku/python/lib/python3.7/site-packages/pydf/bin/wkhtmltopdf: error while loading shared libraries: libXrender.so.1: cannot open shared object file: No such file or directory"

@samuelcolvin are you still maintaining this? thanks....

[samuelcolvin]

working fine for me now.