Please follow the following steps for the successfull running of the blog apliaction

step 1: clone the project from github git clone https://github.com/hejfd/Angular_crud_app.git

step 2: open terminal and install the dependincies: npm i

step 3: run the web application: ng serve

step 3: create another terminal and install json server $ npx json-server db.json

step 5: run the json server: json-server --watch db.json

step 6:after following this steps you can get the result at port http://localhost:4200/ if it is unused.