Property ngClass is not provided by any applicable directives nor by div element

Issue

If i want to use ngClass, ngStyle or ngIf i get the following errormessage:

My app.module.ts includes BrowserModule and CommonModule imports. And my Components are in the declarations.

I tried restart ng serve and npm install.

Any Ideas how to fix this?

Solution

As you said, everything works fine when your project is builded/launched in your browser. So it's an issue with your IDE.

You have multiple solutions

• update your Intellij, if it's already updated ...
• ... invalidate your cache, if it's still doesn't work
• delete your node module and recreate it (this fixed your issue here https://youtrack.jetbrains.com/issue/WEB-51326)
• reinstall it/create new project
• or ... switch to VSCode while Intellij is fixing your bug

Answered By - Pilpo