solve the problem in an Angular application

Job ID: 35112124

Budget: €30 – €250 EUR

I have an Angular project that does not work in local host, each time the program is run
there is an error which is displayed in the following form:

The project is developed with Angular 9.

Your mission :

1- You will need to explain where the error came from and how you resolved it, the
explanation should be in the form of a Word or PDF file.
2-Update the application so that it is compatible with the new Angular version, you can also
explain how to update it and how to avoid possible bugs that may occur in the future.
3-Solve this problem as soon as possible, the application must be functional on port 4200
locally.
The project is registered on git-hub.
Related categories: JavaScript Node.js Express JS AngularJS Angular