Reproduce (KeyError) key :to_tenant not found in: nil

[moxley]

Contributor checklist

• Bug fixes include regression tests
• Features include unit/acceptance tests

Elixir Forum reference: https://elixirforum.com/t/not-found-in-nil-exception-after-ash-upgrade/70722/15

15:17:28.414 [error] 4291beb8-4a54-4fb1-b9bd-cdd57dba42b1: Exception raised while resolving query.

** (Ash.Error.Unknown) 
Bread Crumbs:
  > Exception raised in: GF.Event.read> Exception raised in: GF.Attendee.read

Unknown Error

* ** (KeyError) key :to_tenant not found in: nil

If you are using the dot syntax, such as map.field, make sure the left-hand side of the dot is a map
  (ash 3.5.8) lib/ash/policy/check/expression.ex:3: Ash.Policy.Check.Expression.try_strict_check/3
  (ash 3.5.8) lib/ash/policy/policy.ex:183: Ash.Policy.Policy.fetch_or_strict_check_fact/2
  (ash 3.5.8) lib/ash/policy/policy.ex:431: Ash.Policy.Policy.handle_constants/2
  (ash 3.5.8) lib/ash/policy/policy.ex:404: Ash.Policy.Policy.handle_constants/2
  (ash 3.5.8) lib/ash/policy/policy.ex:390: Ash.Policy.Policy.handle_constants/2
  (ash 3.5.8) lib/ash/policy/policy.ex:404: Ash.Policy.Policy.handle_constants/2
  (ash 3.5.8) lib/ash/policy/policy.ex:390: Ash.Policy.Policy.handle_constants/2
  (ash 3.5.8) lib/ash/policy/policy.ex:29: Ash.Policy.Policy.solve/1
  (ash 3.5.8) lib/ash/policy/checker.ex:65: Ash.Policy.Checker.strict_check_scenarios/1
  (ash 3.5.8) lib/ash/policy/authorizer/authorizer.ex:1696: Ash.Policy.Authorizer.strict_check_result/2
  (ash 3.5.8) lib/ash/policy/authorizer/authorizer.ex:1119: Ash.Policy.Authorizer.field_condition/5
  (ash 3.5.8) lib/ash/policy/authorizer/authorizer.ex:1082: Ash.Policy.Authorizer.expression_for_ref/6
  (ash 3.5.8) lib/ash/policy/authorizer/authorizer.ex:1006: Ash.Policy.Authorizer.replace_refs/2
  (ash 3.5.8) lib/ash/policy/authorizer/authorizer.ex:972: Ash.Policy.Authorizer.replace_refs/2
  (ash 3.5.8) lib/ash/policy/authorizer/authorizer.ex:734: Ash.Policy.Authorizer.alter_filter/3
  (ash 3.5.8) lib/ash/can.ex:481: Ash.Can.alter_query/5
  (elixir 1.18.1) lib/enum.ex:2546: Enum."-reduce/3-lists^foldl/2-0-"/3
  (ash 3.5.8) lib/ash.ex:1390: Ash.can/3
  (ash 3.5.8) lib/ash/actions/read/read.ex:1415: Ash.Actions.Read.authorize_query/2
  (ash 3.5.8) lib/ash/actions/read/read.ex:472: Ash.Actions.Read.do_read/5

    (ash 3.5.8) lib/ash/policy/check/expression.ex:3: Ash.Policy.Check.Expression.try_strict_check/3
    (ash 3.5.8) lib/ash/policy/policy.ex:183: Ash.Policy.Policy.fetch_or_strict_check_fact/2
    (ash 3.5.8) lib/ash/policy/policy.ex:431: Ash.Policy.Policy.handle_constants/2
    (ash 3.5.8) lib/ash/policy/policy.ex:404: Ash.Policy.Policy.handle_constants/2
    (ash 3.5.8) lib/ash/policy/policy.ex:390: Ash.Policy.Policy.handle_constants/2
    (ash 3.5.8) lib/ash/policy/policy.ex:404: Ash.Policy.Policy.handle_constants/2
    (ash 3.5.8) lib/ash/policy/policy.ex:390: Ash.Policy.Policy.handle_constants/2
    (ash 3.5.8) lib/ash/policy/policy.ex:29: Ash.Policy.Policy.solve/1
    (ash 3.5.8) lib/ash/policy/checker.ex:65: Ash.Policy.Checker.strict_check_scenarios/1
    (ash 3.5.8) lib/ash/policy/authorizer/authorizer.ex:1696: Ash.Policy.Authorizer.strict_check_result/2
    (ash 3.5.8) lib/ash/policy/authorizer/authorizer.ex:1119: Ash.Policy.Authorizer.field_condition/5
    (ash 3.5.8) lib/ash/policy/authorizer/authorizer.ex:1082: Ash.Policy.Authorizer.expression_for_ref/6
    (ash 3.5.8) lib/ash/policy/authorizer/authorizer.ex:1006: Ash.Policy.Authorizer.replace_refs/2
    (ash 3.5.8) lib/ash/policy/authorizer/authorizer.ex:972: Ash.Policy.Authorizer.replace_refs/2
    (ash 3.5.8) lib/ash/policy/authorizer/authorizer.ex:734: Ash.Policy.Authorizer.alter_filter/3
    (ash 3.5.8) lib/ash/can.ex:481: Ash.Can.alter_query/5
    (elixir 1.18.1) lib/enum.ex:2546: Enum."-reduce/3-lists^foldl/2-0-"/3
    (ash 3.5.8) lib/ash.ex:1390: Ash.can/3
    (ash 3.5.8) lib/ash/actions/read/read.ex:1415: Ash.Actions.Read.authorize_query/2
    (ash 3.5.8) lib/ash/actions/read/read.ex:472: Ash.Actions.Read.do_read/5




  1) test basic (GF.Test)
     test/gf_test.exs:4
     Expected truthy, got nil
     code: assert data["getEvent"]
     arguments:

         # 1
         %{"getEvent" => nil}

         # 2
         "getEvent"

     stacktrace:
       test/gf_test.exs:73: (test)

[zachdaniel]

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