An error occurred while updating the kotlin classpath entry, Project does not exist

[nisargjhaveri]

I'm often getting these or similar errors when trying out a project with both Java and Kotlin source. Is is a sample Android project I have with just a couple of files.

[Error - 12:16:13 AM] 28-Nov-2022, 12:16:13 am SampleApplication does not exist
SampleApplication does not exist
Java Model Exception: Error in Java Model (code 969): SampleApplication does not exist
	at org.eclipse.jdt.internal.core.JavaElement.newNotPresentException(JavaElement.java:574)
	at org.eclipse.jdt.internal.core.JavaModelManager.getPerProjectInfoCheckExistence(JavaModelManager.java:2503)
	at org.eclipse.jdt.internal.core.JavaProject.getPerProjectInfo(JavaProject.java:2444)
	at org.eclipse.jdt.internal.core.JavaProject.getRawClasspath(JavaProject.java:2487)
	at org.javacs.kt.jdt.ls.extension.KotlinImporterUtils.setKlsClasspathEntry(KotlinImporterUtils.java:49)
	at org.javacs.kt.jdt.ls.extension.SetKotlinBuildOutputCommandHandler.executeCommand(SetKotlinBuildOutputCommandHandler.java:46)
...

[Error - 12:16:27 AM] 28-Nov-2022, 12:16:27 am An error occurred while updating the kotlin classpath entry