I am trying RxJs7 in my angular 12.2.0 project and it seems like the path of rxjs operator and method changed. I am getting the below error ./dist/candypal/website/fesm2015/candypal-website.js:8:0-...

I have upgraded my Angular App dependency and successfully installed them. Unfortunately I am now unable to use 'rxjs'. Below is the error returned by the IDE. TS7016: Could not find a declaration...