When I try to load on heroku an app i did with meteor and react I get an error. I installed Papertail in heroku and this is the message i get:
Jan 18 13:00:02 markdown-notes heroku/web.1: Starting process with command `node build/bundle/main.js`
Jan 18 13:00:05 markdown-notes app/web.1: assert.js:93
Jan 18 13:00:05 markdown-notes app/web.1: throw new assert.AssertionError({
Jan 18 13:00:05 markdown-notes app/web.1: ^
Jan 18 13:00:05 markdown-notes app/web.1: AssertionError: "undefined" === "function"
Jan 18 13:00:05 markdown-notes app/web.1: at wrapPathFunction (/app/build/bundle/programs/server/mini-files.js:77:10)
Jan 18 13:00:05 markdown-notes app/web.1: at Object.<anonymous> (/app/build/bundle/programs/server/mini-files.js:108:24)
Jan 18 13:00:05 markdown-notes app/web.1: at Module._compile (module.js:456:26)
Jan 18 13:00:05 markdown-notes app/web.1: at Object.Module._extensions..js (module.js:474:10)
Jan 18 13:00:05 markdown-notes app/web.1: at Module.load (module.js:356:32)
Jan 18 13:00:05 markdown-notes app/web.1: at Function.Module._load (module.js:312:12)
Jan 18 13:00:05 markdown-notes app/web.1: at Module.require (module.js:364:17)
Jan 18 13:00:05 markdown-notes app/web.1: at require (module.js:380:17)
Jan 18 13:00:05 markdown-notes app/web.1: at Object.<anonymous> (/app/build/bundle/programs/server/boot.js:9:13)
Jan 18 13:00:05 markdown-notes app/web.1: at Module._compile (module.js:456:26)
Jan 18 13:00:05 markdown-notes heroku/web.1: Process exited with status 8
Jan 18 13:00:05 markdown-notes heroku/web.1: State changed from starting to crashed
Jan 18 13:01:12 markdown-notes heroku/router: at=error code=H10 desc="App crashed" method=GET path="/" host=markdown-notes.herokuapp.com request_id=95cfb99c-ac59-4fd5-863a-1a607e2caa7d fwd="151.29.6.142" dyno= connect= service= status=503 bytes=
Jan 18 13:01:12 markdown-notes heroku/router: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=markdown-notes.herokuapp.com request_id=ffb83ebf-802d-4d0d-a036-cbcd8019803a fwd="151.29.6.142" dyno= connect= service= status=503 bytes=