Add FIXME comment about html-webpack-plugin-after-emit

build/dev-server.js

@@ -29,6 +29,8 @@ var devMiddleware = require('webpack-dev-middleware')(compiler, {
 })
 
 var hotMiddleware = require('webpack-hot-middleware')(compiler)
+
+// FIXME: The statement below gives error about hooks being required in webpack 5.
 // force page reload when html-webpack-plugin template changes
 // compiler.plugin('compilation', function (compilation) {
 //   compilation.plugin('html-webpack-plugin-after-emit', function (data, cb) {