Error encountered while installation cos of angular dependency

[Atinjanki]

Firstly, I liked how your timeline chart looks :) And thus wanted to try it out.
I encountered the below error while installing, which I thought should have resolved on its own, hence writing here-
npm ERR! code ERESOLVE
npm ERR! ERESOLVE unable to resolve dependency tree
npm ERR!
npm ERR! While resolving: practice-timeline@0.0.0
npm ERR! Found: @angular/common@9.1.13
npm ERR! node_modules/@angular/common
npm ERR! @angular/common@"~9.1.3" from the root project
npm ERR!
npm ERR! Could not resolve dependency:
npm ERR! peer @angular/common@"^8.0.1" from ngx-beautiful-charts@2.0.9
npm ERR! node_modules/ngx-beautiful-charts
npm ERR! ngx-beautiful-charts@"*" from the root project
npm ERR!
npm ERR! Fix the upstream dependency conflict, or retry
npm ERR! this command with --force, or --legacy-peer-deps
npm ERR! to accept an incorrect (and potentially broken) dependency resolution.