I have a FilterCheck policy that looks like this:

use Ash.Policy.FilterCheck

 def filter(actor, context, options) do
    tenant_id = context.subject.tenant.id

    resource_name =
      options[:resource]
      |> to_string()
      |> String.split(".")
      |> List.last()

    expr(
      exists(
        MyApp.AccessRight,
        tenant_id == ^tenant_id and
          resource_name == ^resource_name and read == true)
      )
    )

    # dbg()
  end

and I use this policy in my resource this way:

  policies do
    policy action(:list_paginated) do
      authorize_if MyFilterCheckPolicy
    end
  end

and here is how I use the resource action in my LiveView:

Posts.list_paginated(actor: current_user, tenant: tenant)

The problem:
For some reason, this setup does not work; it raises this error:

[error] ** (ArgumentError) `nil` is not a Spark DSL module.

    nil.persisted(:data_layer)
    (spark 2.2.31) lib/spark/dsl/extension.ex:138: Spark.Dsl.Extension.persisted!/3
    (ash 3.4.21) lib/ash/filter/filter.ex:3734: Ash.Filter.do_hydrate_refs/2
    ... more stacktraces below

and interestingly, it works if I uncomment the dbg() call at the end of the policy (see code above).

How can I fix the above error?