visual composer plugin packaged with my theme breaks page on activate

[iposton]

I had to include and push a composer.json file with a mbstring extension and a composer lock file to heroku to get visual composer to work and load my homepage for the theme I used. I ran touch composer.json to the root of the app directory, required the extension inside the file (example https://coderwall.com/p/deyqua/how-to-use-mbstring-on-heroku-php) and then ran composer update to auto generate the composer lock file. example here https://devcenter.heroku.com/articles/getting-started-with-php#declare-app-dependencies . I then was able to push from production:master and it fixed the issue with my theme.