Preview features enabled at an invalid source release level 12, preview can be enabled only at source level 13

[xCuri0]

Preview features enabled at an invalid source release level 12, preview can be enabled only at source level 13

Environment

• Operating System: Windows 10 x64
• JDK version: tested OpenJDK 11, Oracle JDK 12, Oracle JDK 13
• Visual Studio Code version: 1.38.1 (user setup)
• Java extension version: 0.50

Steps To Reproduce

1. Start the program
2. You will get the error

public class HelloWorld {
    public static void main(String[] args) {
       System.out.println("Hello world!");
    }
 }

Current Result

[Error - 12:22:14 PM] Oct 3, 2019, 12:22:14 PM Error occured while building workspace. Details: 
 message: Preview features enabled at an invalid source release level 12, preview can be enabled only at source level 13; code: 2098258; resource: D:/Documents/workspace/HelloWorld.java;

in language support for java log

Expected Result

Compile and run

Additional Informations

[fbricon]

can you try running the "Java: clean the Java language server workspace" command?

[LeonSpors]

Updating to the latest version helped me. (12.01 to 13 Build 33)