> webpack1-sassloader3-sass4@1.0.0 webpack-d /Users/bholloway/Documents/bholloway/resolve-url-loader/tmp/1536277707/webpack1-sassloader3-sass4/postcss/misconfiguration
> webpack -d

Hash: 861ec26824f86f50dc52
Version: webpack 1.15.0
Time: 583ms
    + 1 hidden modules

ERROR in ./src/index.scss
Module build failed: ModuleError: Error: resolve-url-loader: loader misconfiguration
  "join" option must be a Function
    at DependenciesBlock.<anonymous> (/Users/bholloway/Documents/bholloway/resolve-url-loader/tmp/.cache/webpack1-sassloader3-sass4/node_modules/webpack-core/lib/NormalModuleMixin.js:79:21)
    at handleAsError (/Users/bholloway/Documents/bholloway/resolve-url-loader/packages/resolve-url-loader/index.js:213:12)
    at Object.resolveUrlLoader (/Users/bholloway/Documents/bholloway/resolve-url-loader/packages/resolve-url-loader/index.js:87:12)
Child extract-text-webpack-plugin:
        + 2 hidden modules
    
    ERROR in /Users/bholloway/Documents/bholloway/resolve-url-loader/tmp/.cache/webpack1-sassloader3-sass4/~/css-loader?sourceMap!/Users/bholloway/Documents/bholloway/resolve-url-loader/packages/resolve-url-loader?sourceMap&engine=postcss&silent!/Users/bholloway/Documents/bholloway/resolve-url-loader/tmp/.cache/webpack1-sassloader3-sass4/~/sass-loader?sourceMap&sourceMapContents=false!./src/index.scss
    Error: resolve-url-loader: loader misconfiguration
      "join" option must be a Function