$oldValidUserPremiumPacks->unique(‘user_id’)->pluck(‘user_id’); Thle line above gives me unique user ids but the line below doesn’t: $oldValidUserPremiumPacks->pluck(‘user_id’)->unique(‘user_id’); I wonder why. php laravel laravel-10 laravel-collection Recognized by PHP Collective 1 Maybe try without a selecting field on unique? $oldValidUserPremiumPacks->pluck(‘user_id’)->unique(); The contents of $oldValidUserPremiumPacks->pluck(‘user_id’) is: [1, 1, 2, 3] Therefor $oldValidUserPremiumPacks->pluck(‘user_id’)->unique(‘user_id’) is trying to grab 1->user_id which doesn’t work […]