Unexpected issue encountered during the Angular 9 compilation process

Since migrating to Angular 9, I've encountered an issue with my feature branch after a rebase. Trying to switch to develop and update it using pull origin develop, everything seemed fine until I came across this error that's leaving me puzzled: https://i.sstatic.net/QCRik.png

What does the following error message mean: 
ERROR in Cannot read property 'push' of undefined
?
I'm at a loss trying to understand it by myself...!
Initially, I thought it wasn't impacting anything, but when I checked it out in the browser, I found another unrelated error:

https://i.sstatic.net/2Of1n.png
Honestly, I don't know how to proceed. I'm hoping someone with experience in Angular 9 can shed some light on this.
Thanks in advance.

EDIT:
I compile using npm run start

angulartypescriptangular9

Answer №1

Stick with the development process and execute:

git pull origin develop

next,

npm install

It is likely that new dependencies were added to the project, hence running npm install will take care of it. Once completed, switch back to your feature branch and rebase onto the develop branch.

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