IntelliJ doesn't recognize JavaFX imports

Please delete the System directory: https://www.jetbrains.com/help/idea/tuning-the-ide.html#system-directory when the IDE is not running.

That did not work.

When do you get the error, in the editor or when compiling?

Please share a sample project to reproduce the issue: https://uploads.jetbrains.com.

Make sure the project is set up according to https://www.jetbrains.com/help/idea/javafx.html.

See also https://openjfx.io/openjfx-docs/ .

2021_03_15_WYSi5mnUdcVK3hZL

Both, in the editor and when compiling. 

The issue is with your project, not with IntelliJ IDEA.

First problem is that the import statement is incorrect:

import javafx.fxml;

Should be changed to this:

import javafx.fxml.*;

The second problem is that you do not specify JavaFX modules to be used in the module dependencies.

cScripts\scripts\cChompy\build.gradle.kts needs to be updated with something like this:

javafx {
    modules = listOf("javafx.controls", "javafx.fxml", "javafx.web")
    version = "15.0.1"
}

Thank you so much! 

javafx {
    modules = listOf("javafx.controls", "javafx.fxml", "javafx.web")
    version = "15.0.1"
}

This piece of code fixed it.

It's documented here: https://openjfx.io/openjfx-docs/#gradle . Please always follow the official documentation before asking questions.