medusa-store/docs/content/troubleshooting/awilix-resolution-error/_service-lifetime.md

If you're registering a custom resource within a middleware, for example a logged-in user, then make sure that all services that are using it have their LIFE_TIME static property either set to Lifetime.SCOPED or Lifetime.TRANSIENT. This mainly applies for services in the core Medusa package, as, by default, their lifetime is Lifetime.SINGLETON.

For example:

import { Lifetime } from "awilix"
import { 
  ProductService as MedusaProductService,
} from "@medusajs/medusa"

// extending ProductService from the core
class ProductService extends MedusaProductService {
  // The default life time for a core service is SINGLETON
  static LIFE_TIME = Lifetime.SCOPED

  // ...
}

export default ProductService

This may require you to extend a service as explained in this documentation if necessary.

If you're unsure which service you need to change its LIFE_TIME property, it should be mentioned along with the AwilixResolutionError message. For example:

AwilixResolutionError: Could not resolve 'loggedInUser'.

Resolution path: cartService -> productService -> loggedInUser

As shown in the resolution path, you must change the LIFE_TIME property of both cartService and productService to Lifetime.SCOPED or Lifetime.TRANSIENT.

You can learn about the service lifetime in the Create a Service documentation.