Angular 7 ngc-webpack

[mukulstan]

hi,i am migrating my angular 4 admin project to 7 ,and after migration getting this error.The project was working fine with version4.

Cannot read property 'prototype' of undefined at __extends (/var/www/html/ifta_7/admin/node_modules/ngc-webpack/src/webpack-chain-module-resolution-host-adapter.js:5:69) at /var/www/html/ifta_7/admin/node_modules/src/webpack-chain-module-resolution-host-adapter.ts:7:62 at Object. (/var/www/html/ifta_7/admin/node_modules/src/webpack-chain-module-resolution-host-adapter.ts:7:1) 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) at Module.require (module.js:597:17) at require (internal/module.js:11:18) at Object. (/var/www/html/ifta_7/admin/node_modules/src/main.ts:15:1) 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) at Module.require (module.js:597:17) at require (internal/module.js:11:18) at Object. (/var/www/html/ifta_7/admin/node_modules/src/plugin.ts:3:1) at Module._compile (module.js:653:30) at Object.Module._extensions..js (module.js:664:10) at Module.load (module.js:566:32) devDependancy:{ "webpack": "2.3.3", "webpack-dev-middleware": "1.10.1", "webpack-dev-server": "2.4.2", "webpack-dll-bundles-plugin": "1.0.0-beta.5", "webpack-merge": "4.1.0", }

"ngc-webpack": "^1.2.0" I have tried to upgrade version of ngc-webpack to 4.But then getting error @ngtools/webpack not found

[ramya0311]

@mukulstan were you able to resolve this error?