Cannot find the class file for javax.servlet.http.HttpServletResponse.

• Operating System: Ubuntu 20.04
• JDK version: openjdk 11.0.11
• Visual Studio Code version: 1.60.1
• Java extension version: v0.82.0

I have a java project that uses gradle. This project worked well with the java extension for a long time.

Now, when I run './gradlew assemble' from the command line, the project builds successfully.

When I load the project in VSCode I get the following errors...

{
	"resource": "/myproj//java_server",
	"owner": "_generated_diagnostic_collection_name_#1",
	"code": "0",
	"severity": 8,
	"message": "The project was not built since its build path is incomplete. Cannot find the class file for javax.servlet.http.HttpServletResponse. Fix the build path then try building this project",
	"source": "Java",
	"startLineNumber": 1,
	"startColumn": 1,
	"endLineNumber": 1,
	"endColumn": 1
}
{
	"resource": "/myproj/java_server/src/main/java/framework/MessageHandler.java",
	"owner": "_generated_diagnostic_collection_name_#1",
	"code": "16777540",
	"severity": 8,
	"message": "The type javax.servlet.http.HttpServletResponse cannot be resolved. It is indirectly referenced from required .class files",
	"source": "Java",
	"startLineNumber": 1,
	"startColumn": 1,
	"endLineNumber": 1,
	"endColumn": 2
}

Start by reproducing the reported project state in VS Code with JDK 11 and the listed Java extension version, then compare it with the successful ./gradlew assemble command. Inspect how the extension handles the Gradle project's build path and the reference from src/main/java/framework/MessageHandler.java; done means the project loads without the missing javax.servlet.http.HttpServletResponse diagnostics.