Angular: HttpClientModule import error (could not be resolved to an NgModule class)
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)
just stop ng serve before adding new package, after adding new package restart ng serve. This will solve this issue.
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...