Cannot load the application in newer version without loading it in older version of Angular

Question

I was working on angular 2 previously and now upgraded the application to angular 12, the application is loading but only if the version 2 is compiled and loaded. It is compiling successfully , but giving errors in console.

How can I load the newer version of application?

Answer 1

Angular update guide says specificaly not to update multiple versions at once. Try to update and solve any issues one version at a time.