Stockfish Wasm pthread sent an error! undefined:undefined: undefined

[amber quartz]

After struggling for a bit I got the wasm version to run in the browser but the second I instansiate stockfish by doing:

  Stockfish().then((sf) => {
    sf.addMessageListener((line) => {
      console.log(line);
    });

    sf.postMessage("uci");
  });

It will print this in the console:
pthread sent an error! undefined:undefined: undefined
I looked up and it seems that pthread is related to webassembly internals? Anyone know how to fix this or why this error occurs?

[warped bay]

What browser are you using?

[warped bay]

actually, it's probably more likely you aren't setting the headers as described in the readme

[amber quartz]

Firefox