Checkboxes field type keeps triggering Validation error message

Archive
1

Running into an issue where the checkboxes form field functionality keeps triggering this error message whenever I try saving a page:

Validation failed: 
Invalid input in "Platforms"

I included my blueprint below:

title: Review

'@extends':
    type: default
    context: blueprints://pages

form:
    fields:
        tabs:
            fields:
                review:
                    type: tab
                    title: Review 
                    
                    fields:
                        review_basics:
                            type: section
                            title: Basics
                            underline: true
                        
                        header.review_basics_masthead:
                            label: Masthead
                            type: pagemediaselect
                        
                        header.review_basics_author:
                            type: select
                            classes: fancy
                            size: long
                            label: Author
                            options:
                                'Author 1': Author 1
                                'Author 2': Author 2
                                'Author 3': Author 3
                        
                        review_gameinformation:
                            type: section
                            title: Game Information
                            underline: true
                        
                        header.review_gameinformation_platforms:
                            type: checkboxes
                            label: Platforms
                            options:
                                ps4: PS4
                                ps3: PS3
                                xbo: Xbox One
                                x360: Xbox 360
                                wiiu: Wii U
                                wii: Wii
                                n3ds: 3DS
                                nds: DS
                                vita: Vita
                                psp: PSP
                                pc: PC
                        
                        header.review_gameinformation_developer:
                            type: text
                            label: Developer
                        
                        header.review_gameinformation_publisher_america:
                            type: text
                            label: Publisher (North America)
                        
                        header.review_gameinformation_publisher_europe:
                            type: text
                            label: Publisher (Europe)
                        
                        header.review_gameinformation_release_america:
                            type: datetime
                            label: Release Date (America)
                        
                        header.review_gameinformation_release_europe:
                            type: datetime
                            label: Release Date (Europe)
---
2

Not sure of the exact reason why this worked (would like to know if there’s a better way), but I did get it to save by setting use: keys in the blueprint config.