Can't read Virtual Codes via Volar Labs extension

[RonBis]

Getting an error whenever I try to read VirtualCode from Volar Labs sidebar icon

[error] CodeExpectedError: cannot open volar_virtual_code://my_ls/root.html#file%253A%252F%252F%252Fd%25253A%252FCode%252FMisc%252FExtension%252520Dev%252Fmy-ls%252Fsample%252Ftest2.html. Detail: Unable to resolve text model content for resource volar_virtual_code://my_ls/root.html#file%253A%252F%252F%252Fd%25253A%252FCode%252FMisc%252FExtension%252520Dev%252Fmy-ls%252Fsample%252Ftest2.html at s.$tryOpenDocument (vscode-file://vscode-app/c:/Users/ronil/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/workbench.desktop.main.js:2196:101536)

Here is the reference code:

• index.ts (Server)

const connection = createConnection();
const server = createServer(connection);

connection.listen();

connection.onInitialize((params) => {
  return server.initialize(
    params,
    createSimpleProject([languagePlugin]),
    []
  );
});

connection.onInitialized(server.initialized);
connection.onShutdown(server.shutdown);

• plugin.ts (Server)

export const languagePlugin: LanguagePlugin<URI> = {
  getLanguageId(uri) {
    if (uri.path.endsWith(".html")) {
      return "html";
    }
  },
  createVirtualCode(uri, languageId, snapshot, ctx) {
    if (languageId === "html") {
      return new MyVirtualCode(snapshot);
    }
  },
};

export class MyVirtualCode implements VirtualCode {
  id = "root";
  languageId = "html";
  mappings: CodeMapping[];
  embeddedCodes?: VirtualCode[];

  constructor(public snapshot: IScriptSnapshot) {
    this.mappings = [
      {
        sourceOffsets: [0],
        generatedOffsets: [0],
        lengths: [snapshot.getLength()],
        data: {
          completion: true,
          format: true,
          navigation: true,
          semantic: true,
          structure: true,
          verification: true,
        },
      },
    ];
    this.onSnapshotUpdated();
  }

  public update(newSnapshot: IScriptSnapshot) {
    this.snapshot = newSnapshot;
    this.onSnapshotUpdated();
  }

  public onSnapshotUpdated() {
    const snapshotContent = this.snapshot.getText(0, this.snapshot.getLength());
  }
}

What am I doing wrong here?