TypeError: Cannot read property 'entryOption' of undefined
at compilers.forEach (/Users/username/intergram/node_modules/webpack-dev-server/lib/utils/updateCompiler.js:51:22)
at Array.forEach ()
at updateCompiler (/Users/username/intergram/node_modules/webpack-dev-server/lib/utils/updateCompiler.js:49:15)
at new Server (/Users/username/intergram/node_modules/webpack-dev-server/lib/Server.js:72:5)
at Object. (/Users/username/intergram/devServer.js:5:1)
at Module._compile (module.js:653:30)
at Object.Module._extensions..js (module.js:664:10)
at Module.load (module.js:566:32)
at tryModuleLoad (module.js:506:12)
at Function.Module._load (module.js:498:3)
/Users/username/intergram/node_modules/webpack-dev-server/lib/utils/updateCompiler.js:51 compiler.hooks.entryOption.call(config.context, config.entry); ^
TypeError: Cannot read property 'entryOption' of undefined at compilers.forEach (/Users/username/intergram/node_modules/webpack-dev-server/lib/utils/updateCompiler.js:51:22) at Array.forEach ()
at updateCompiler (/Users/username/intergram/node_modules/webpack-dev-server/lib/utils/updateCompiler.js:49:15)
at new Server (/Users/username/intergram/node_modules/webpack-dev-server/lib/Server.js:72:5)
at Object. (/Users/username/intergram/devServer.js:5:1)
at Module._compile (module.js:653:30)
at Object.Module._extensions..js (module.js:664:10)
at Module.load (module.js:566:32)
at tryModuleLoad (module.js:506:12)
at Function.Module._load (module.js:498:3)