了解Railties依赖项-捆绑程序“找不到兼容”

Question

因此，来自捆绑器的此错误使我失望，我看不到不兼容的地方：

Bundler could not find compatible versions for gem "railties":
  In Gemfile:
  coffee-rails was resolved to 4.2.1, which depends on
    railties (< 5.2.x, >= 4.0.0)

  font-awesome-rails (~> 4.6) was resolved to 4.7.0.1, which depends on
    railties (< 5.1, >= 3.2)

  rails (~> 5.0.7) was resolved to 5.0.7, which depends on
    railties (= 5.0.7)

  rails-i18n (~> 5.0) was resolved to 5.1.1, which depends on
    railties (< 6, >= 5.0)

  sass-rails (~> 5.0) was resolved to 5.0.7, which depends on
    railties (< 6, >= 4.0.0)

有人愿意为我布置吗？