Angular: HttpClientModule import error (could not be resolved to an NgModule class)

Question

I was trying to build a simple app with crud on fake json server

but i can\'t import HttpClientModule

Here is error message from VS Code

Answer 1

I had the same problem, I just run the following command and it worked after without any error.

npm cache verify

If it does not, try manually deleting the node_modules folder and reinstalling the modules with npm install.

rm -rf node_modules
npm install

On npm > 6, you can also run npm ci, which also deletes the node_modules folder and reinstall packages after.

Edit As other answers suggested, you may need to restartng serve if the above steps do not work (but they normally do)

Answer 2

I had the same issue. So, I manually deleted node_modules and then npm install. It solved as this issue was because of the corrupt dependencies.

Answer 3

just stop ng serve before adding new package, after adding new package restart ng serve. This will solve this issue.

Answer 4

First Stop ng serve and run these commands...

npm cache verify
rm -rf node_modules
npm install

After the installation build & run your project using the commands

ng build
ng serve

It works for me and solve the issue...