The names passed to preload should match the names of the associations you want to preload.
In your case, that would mean passing preloads = [:crypto, :user] (no s) to get_user_crypto_from_user!
The names passed to preload should match the names of the associations you want to preload.
In your case, that would mean passing preloads = [:crypto, :user] (no s) to get_user_crypto_from_user!