Angular 12 Library Builds Fails with error [object Object]

Issue

I have been trying to build this library in angular 12. But the only error message I get is [object Object]. What could I try to debug the problem?

> nx run user-pref:build:production 
> Building Angular Package

> ------------------------------------------------------------------------------
> Building entry point '@umn/user-pref'
> ------------------------------------------------------------------------------
> ✖ Compiling with Angular sources in Ivy partial compilation mode.
> [object Object]
> 
>  NX   ERROR  Running target "user-pref:build" failed

Solution

After days of debugging I finally found the reason.

A component in the library was importing a file from another library using its file location '../../../file.ts' instead of @library-name/file.

Answered By - umunBeing