Guess the error message

Can you guess the correct error message this program will throw when executed, also do mention why?

class HookExecutor {
  constructor() {
    this.hooks = [];
  }

  async exec() {
    try {
      this.hooks.forEach((fn) => fn());
    } catch (Err) {
      console.log(
        "Error 3: caught inside exec function where all hooks are executed."
      );
    }
  }

  process() {
    this.exec().catch((error) => {
      console.log("Error 2: caught inside new HooksExecutor.process", error);
    });
  }
}

const hookExecutor = new HookExecutor();
try {
  hookExecutor.hooks.push(async () => {
    console.log("I am a hooks");
    throw new Error("Serious Error!");
  });
} catch (err) {
  console.log("Error 1: Caught in global space", err);
}

hookExecutor.process();