```ruby
class SplitTimeSerializer < BaseSerializer
  attributes :id, :effort_id, :lap, :split_id, :bitkey, :time_from_start, :data_status, :pacer, :remarks
  link(:self) { api_v1_split_time_path(object) }

  belongs_to :effort
  belongs_to :split
end```

Remove belongs_to relationships from SplitTimeSerializer.
user
```ruby
class SplitTimeSerializer < BaseSerializer
  attributes :id, :effort_id, :lap, :split_id, :bitkey, :time_from_start, :data_status, :pacer, :remarks
  link(:self) { api_v1_split_time_path(object) }
end
```
assistant