[Bug]: Event Bus Services do not log subscription errors properly

[MiguelFranken]

Package.json file

{
  "name": "",
  "version": "0.0.1",
  "description": "A starter for Medusa projects.",
  "author": "Medusa (https://medusajs.com)",
  "license": "MIT",
  "keywords": [
    "sqlite",
    "postgres",
    "typescript",
    "ecommerce",
    "headless",
    "medusa"
  ],
  "scripts": {
    "build": "medusa build",
    "build:admin": "DISABLE_MEDUSA_ADMIN=true medusa build --admin-only",
    "seed": "medusa exec ./src/scripts/seed.ts",
    "start": "medusa start",
    "dev": "medusa develop",
    "db:migrate": "medusa db:migrate",
    "db:sync-links": "medusa db:sync-links",
    "test:integration:http": "TEST_TYPE=integration:http NODE_OPTIONS=--experimental-vm-modules jest --silent=false --runInBand --forceExit",
    "test:integration:modules": "TEST_TYPE=integration:modules NODE_OPTIONS=--experimental-vm-modules jest --silent --runInBand --forceExit",
    "test:unit": "TEST_TYPE=unit NODE_OPTIONS=--experimental-vm-modules jest --silent --runInBand --forceExit"
  },
  "dependencies": {
    "@medusajs/admin-sdk": "^2.0.1",
    "@medusajs/cli": "^2.0.1",
    "@medusajs/framework": "^2.0.1",
    "@medusajs/medusa": "^2.0.1",
    "@mikro-orm/core": "5.9.7",
    "@mikro-orm/knex": "5.9.7",
    "@mikro-orm/migrations": "5.9.7",
    "@mikro-orm/postgresql": "5.9.7",
    "awilix": "^8.0.1",
    "pg": "^8.13.0",
    "zod": "3.22.4"
  },
  "devDependencies": {
    "@medusajs/test-utils": "latest",
    "@mikro-orm/cli": "5.9.7",
    "@swc/core": "1.5.7",
    "@swc/jest": "^0.2.36",
    "@types/jest": "^29.5.13",
    "@types/node": "^20.0.0",
    "@types/react": "^18.3.2",
    "@types/react-dom": "^18.2.25",
    "jest": "^29.7.0",
    "prop-types": "^15.8.1",
    "react": "^18.2.0",
    "react-dom": "^18.2.0",
    "ts-node": "^10.9.2",
    "typescript": "^5.6.2",
    "vite": "^5.2.11"
  },
  "engines": {
    "node": ">=20"
  }
}

Node.js version

v20.13.1

Database and its version

16.2

Operating system name and version

Mac OS

Browser name

No response

What happended?

Error are not properly logged in Event Bus module.

Issue is here:

medusa/packages/modules/event-bus-local/src/services/event-bus-local.ts

Line 133 in 34d5787

`An error occurred while processing ${event.toString()}: ${e}`

I am trying to debug an error with the payment webhook subscriber and it's not possible for me to get a good error message as the error here is an object and the logger instance just returns [Object objct]

Expected behavior

Event bus modules log properly

Actual behavior

Logger logs [Object objct] for errors in subscribe method

Link to reproduction repo

/

[MiguelFranken]

Updated today to the newest version 2.0.6 and the error is still not serialized properly.
I tested it with event-bus-local and I get a proper error message, but the problem still happens when I use redis.

@carlos-r-l-rodrigues