message: fix parsed.version to check for null or undefined
diff: @@ -91,7 +91,7 @@ export class Loader extends EventEmitter implements ILoader {
  const parsed = this.parseUrl(resolvedAsPrague.url);
  let canCache = true;
  - let connection = parsed.version === undefined ? "open" : "close";
  + let connection = !parsed.version ? "open" : "close";
  let version = parsed.version;
  if (request.headers) {
  