Files field: Filesize validation rules give 500 error

[spaceballstheuser]

Bug description

Using the Min Filesize (KB) or Max Filesize (KB) validation options on a Files field gives a 500 error:

Method Illuminate\Validation\Validator::validateMinFilesize does not exist.

How to reproduce

Create a form, add a Files field. Add Min Filesize (KB) validation rule e.g.: min_filesize:10000. Add a file below 10MB and submit the form. Or Vice versa for Max Filesize (KB)

Logs

[2026-02-26 08:54:17] local.ERROR: Method Illuminate\Validation\Validator::validateMinFilesize does not exist. {"userId":"ec39c164-4178-4511-b6c9-e5cfdd827b83","exception":"[object] (BadMethodCallException(code: 0): Method Illuminate\\Validation\\Validator::validateMinFilesize does not exist. at /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Validation/Validator.php:1773)
[stacktrace]
#0 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Validation/Validator.php(726): Illuminate\\Validation\\Validator->__call('validateMinFile...', Array)
#1 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Validation/Validator.php(481): Illuminate\\Validation\\Validator->validateAttribute('files_field', 'MinFilesize')
#2 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Validation/Validator.php(516): Illuminate\\Validation\\Validator->passes()
#3 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Validation/ValidatesWhenResolvedTrait.php(31): Illuminate\\Validation\\Validator->fails()
#4 /Users/isaacfennell/Sites/your-project-name/vendor/statamic/cms/src/Http/Requests/FrontendFormRequest.php(125): Illuminate\\Foundation\\Http\\FormRequest->validateResolved()
#5 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Support/Traits/Localizable.php(29): Statamic\\Http\\Requests\\FrontendFormRequest->{closure:Statamic\\Http\\Requests\\FrontendFormRequest::validateResolved():125}()
#6 /Users/isaacfennell/Sites/your-project-name/vendor/statamic/cms/src/Http/Requests/FrontendFormRequest.php(125): Statamic\\Http\\Requests\\FrontendFormRequest->withLocale('en', Object(Closure))
#7 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Foundation/Providers/FormRequestServiceProvider.php(30): Statamic\\Http\\Requests\\FrontendFormRequest->validateResolved()
#8 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Container/Container.php(1618): Illuminate\\Foundation\\Providers\\FormRequestServiceProvider->{closure:Illuminate\\Foundation\\Providers\\FormRequestServiceProvider::boot():29}(Object(Statamic\\Http\\Requests\\FrontendFormRequest), Object(Illuminate\\Foundation\\Application))
#9 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Container/Container.php(1556): Illuminate\\Container\\Container->fireCallbackArray(Object(Statamic\\Http\\Requests\\FrontendFormRequest), Array)
#10 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Container/Container.php(1542): Illuminate\\Container\\Container->fireAfterResolvingCallbacks('Statamic\\\\Http\\\\R...', Object(Statamic\\Http\\Requests\\FrontendFormRequest))
#11 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Container/Container.php(951): Illuminate\\Container\\Container->fireResolvingCallbacks('Statamic\\\\Http\\\\R...', Object(Statamic\\Http\\Requests\\FrontendFormRequest))
#12 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(1078): Illuminate\\Container\\Container->resolve('Statamic\\\\Http\\\\R...', Array, true)
#13 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Container/Container.php(864): Illuminate\\Foundation\\Application->resolve('Statamic\\\\Http\\\\R...', Array)
#14 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(1058): Illuminate\\Container\\Container->make('Statamic\\\\Http\\\\R...', Array)
#15 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Routing/ResolvesRouteDependencies.php(92): Illuminate\\Foundation\\Application->make('Statamic\\\\Http\\\\R...')
#16 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Routing/ResolvesRouteDependencies.php(51): Illuminate\\Routing\\ControllerDispatcher->transformDependency(Object(ReflectionParameter), Array, Object(stdClass))
#17 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Routing/ResolvesRouteDependencies.php(30): Illuminate\\Routing\\ControllerDispatcher->resolveMethodDependencies(Array, Object(ReflectionMethod))
#18 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php(59): Illuminate\\Routing\\ControllerDispatcher->resolveClassMethodDependencies(Array, Object(Statamic\\Http\\Controllers\\FormController), 'submit')
#19 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php(40): Illuminate\\Routing\\ControllerDispatcher->resolveParameters(Object(Illuminate\\Routing\\Route), Object(Statamic\\Http\\Controllers\\FormController), 'submit')
#20 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Routing/Route.php(265): Illuminate\\Routing\\ControllerDispatcher->dispatch(Object(Illuminate\\Routing\\Route), Object(Statamic\\Http\\Controllers\\FormController), 'submit')
#21 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Routing/Route.php(211): Illuminate\\Routing\\Route->runController()
#22 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Routing/Router.php(822): Illuminate\\Routing\\Route->run()
#23 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(180): Illuminate\\Routing\\Router->{closure:Illuminate\\Routing\\Router::runRouteWithinStack():821}(Object(Illuminate\\Http\\Request))
#24 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Routing/Middleware/SubstituteBindings.php(50): Illuminate\\Pipeline\\Pipeline->{closure:Illuminate\\Pipeline\\Pipeline::prepareDestination():178}(Object(Illuminate\\Http\\Request))
#25 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(219): Illuminate\\Routing\\Middleware\\SubstituteBindings->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#26 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/VerifyCsrfToken.php(87): Illuminate\\Pipeline\\Pipeline->{closure:{closure:Illuminate\\Pipeline\\Pipeline::carry():194}:195}(Object(Illuminate\\Http\\Request))
#27 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(219): Illuminate\\Foundation\\Http\\Middleware\\VerifyCsrfToken->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#28 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/View/Middleware/ShareErrorsFromSession.php(48): Illuminate\\Pipeline\\Pipeline->{closure:{closure:Illuminate\\Pipeline\\Pipeline::carry():194}:195}(Object(Illuminate\\Http\\Request))
#29 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(219): Illuminate\\View\\Middleware\\ShareErrorsFromSession->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#30 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Session/Middleware/StartSession.php(120): Illuminate\\Pipeline\\Pipeline->{closure:{closure:Illuminate\\Pipeline\\Pipeline::carry():194}:195}(Object(Illuminate\\Http\\Request))
#31 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Session/Middleware/StartSession.php(63): Illuminate\\Session\\Middleware\\StartSession->handleStatefulRequest(Object(Illuminate\\Http\\Request), Object(Illuminate\\Session\\Store), Object(Closure))
#32 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(219): Illuminate\\Session\\Middleware\\StartSession->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#33 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Cookie/Middleware/AddQueuedCookiesToResponse.php(36): Illuminate\\Pipeline\\Pipeline->{closure:{closure:Illuminate\\Pipeline\\Pipeline::carry():194}:195}(Object(Illuminate\\Http\\Request))
#34 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(219): Illuminate\\Cookie\\Middleware\\AddQueuedCookiesToResponse->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#35 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Cookie/Middleware/EncryptCookies.php(74): Illuminate\\Pipeline\\Pipeline->{closure:{closure:Illuminate\\Pipeline\\Pipeline::carry():194}:195}(Object(Illuminate\\Http\\Request))
#36 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(219): Illuminate\\Cookie\\Middleware\\EncryptCookies->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#37 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/HandlePrecognitiveRequests.php(40): Illuminate\\Pipeline\\Pipeline->{closure:{closure:Illuminate\\Pipeline\\Pipeline::carry():194}:195}(Object(Illuminate\\Http\\Request))
#38 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(219): Illuminate\\Foundation\\Http\\Middleware\\HandlePrecognitiveRequests->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#39 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(137): Illuminate\\Pipeline\\Pipeline->{closure:{closure:Illuminate\\Pipeline\\Pipeline::carry():194}:195}(Object(Illuminate\\Http\\Request))
#40 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Routing/Router.php(821): Illuminate\\Pipeline\\Pipeline->then(Object(Closure))
#41 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Routing/Router.php(800): Illuminate\\Routing\\Router->runRouteWithinStack(Object(Illuminate\\Routing\\Route), Object(Illuminate\\Http\\Request))
#42 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Routing/Router.php(764): Illuminate\\Routing\\Router->runRoute(Object(Illuminate\\Http\\Request), Object(Illuminate\\Routing\\Route))
#43 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Routing/Router.php(753): Illuminate\\Routing\\Router->dispatchToRoute(Object(Illuminate\\Http\\Request))
#44 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(200): Illuminate\\Routing\\Router->dispatch(Object(Illuminate\\Http\\Request))
#45 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(180): Illuminate\\Foundation\\Http\\Kernel->{closure:Illuminate\\Foundation\\Http\\Kernel::dispatchToRouter():197}(Object(Illuminate\\Http\\Request))
#46 /Users/isaacfennell/Sites/your-project-name/vendor/statamic/cms/src/Http/Middleware/StopImpersonating.php(13): Illuminate\\Pipeline\\Pipeline->{closure:Illuminate\\Pipeline\\Pipeline::prepareDestination():178}(Object(Illuminate\\Http\\Request))
#47 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(219): Statamic\\Http\\Middleware\\StopImpersonating->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#48 /Users/isaacfennell/Sites/your-project-name/vendor/statamic/cms/src/Http/Middleware/CheckMultisite.php(15): Illuminate\\Pipeline\\Pipeline->{closure:{closure:Illuminate\\Pipeline\\Pipeline::carry():194}:195}(Object(Illuminate\\Http\\Request))
#49 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(219): Statamic\\Http\\Middleware\\CheckMultisite->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#50 /Users/isaacfennell/Sites/your-project-name/vendor/statamic/cms/src/Http/Middleware/CheckComposerJsonScripts.php(21): Illuminate\\Pipeline\\Pipeline->{closure:{closure:Illuminate\\Pipeline\\Pipeline::carry():194}:195}(Object(Illuminate\\Http\\Request))
#51 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(219): Statamic\\Http\\Middleware\\CheckComposerJsonScripts->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#52 /Users/isaacfennell/Sites/your-project-name/vendor/statamic/cms/src/Http/Middleware/PoweredByHeader.php(18): Illuminate\\Pipeline\\Pipeline->{closure:{closure:Illuminate\\Pipeline\\Pipeline::carry():194}:195}(Object(Illuminate\\Http\\Request))
#53 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(219): Statamic\\Http\\Middleware\\PoweredByHeader->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#54 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/TransformsRequest.php(21): Illuminate\\Pipeline\\Pipeline->{closure:{closure:Illuminate\\Pipeline\\Pipeline::carry():194}:195}(Object(Illuminate\\Http\\Request))
#55 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/ConvertEmptyStringsToNull.php(31): Illuminate\\Foundation\\Http\\Middleware\\TransformsRequest->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#56 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(219): Illuminate\\Foundation\\Http\\Middleware\\ConvertEmptyStringsToNull->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#57 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/TransformsRequest.php(21): Illuminate\\Pipeline\\Pipeline->{closure:{closure:Illuminate\\Pipeline\\Pipeline::carry():194}:195}(Object(Illuminate\\Http\\Request))
#58 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/TrimStrings.php(51): Illuminate\\Foundation\\Http\\Middleware\\TransformsRequest->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#59 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(219): Illuminate\\Foundation\\Http\\Middleware\\TrimStrings->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#60 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Http/Middleware/ValidatePostSize.php(27): Illuminate\\Pipeline\\Pipeline->{closure:{closure:Illuminate\\Pipeline\\Pipeline::carry():194}:195}(Object(Illuminate\\Http\\Request))
#61 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(219): Illuminate\\Http\\Middleware\\ValidatePostSize->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#62 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/PreventRequestsDuringMaintenance.php(109): Illuminate\\Pipeline\\Pipeline->{closure:{closure:Illuminate\\Pipeline\\Pipeline::carry():194}:195}(Object(Illuminate\\Http\\Request))
#63 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(219): Illuminate\\Foundation\\Http\\Middleware\\PreventRequestsDuringMaintenance->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#64 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Http/Middleware/HandleCors.php(61): Illuminate\\Pipeline\\Pipeline->{closure:{closure:Illuminate\\Pipeline\\Pipeline::carry():194}:195}(Object(Illuminate\\Http\\Request))
#65 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(219): Illuminate\\Http\\Middleware\\HandleCors->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#66 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Http/Middleware/TrustProxies.php(58): Illuminate\\Pipeline\\Pipeline->{closure:{closure:Illuminate\\Pipeline\\Pipeline::carry():194}:195}(Object(Illuminate\\Http\\Request))
#67 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(219): Illuminate\\Http\\Middleware\\TrustProxies->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#68 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/InvokeDeferredCallbacks.php(22): Illuminate\\Pipeline\\Pipeline->{closure:{closure:Illuminate\\Pipeline\\Pipeline::carry():194}:195}(Object(Illuminate\\Http\\Request))
#69 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(219): Illuminate\\Foundation\\Http\\Middleware\\InvokeDeferredCallbacks->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#70 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Http/Middleware/ValidatePathEncoding.php(26): Illuminate\\Pipeline\\Pipeline->{closure:{closure:Illuminate\\Pipeline\\Pipeline::carry():194}:195}(Object(Illuminate\\Http\\Request))
#71 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(219): Illuminate\\Http\\Middleware\\ValidatePathEncoding->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#72 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(137): Illuminate\\Pipeline\\Pipeline->{closure:{closure:Illuminate\\Pipeline\\Pipeline::carry():194}:195}(Object(Illuminate\\Http\\Request))
#73 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(175): Illuminate\\Pipeline\\Pipeline->then(Object(Closure))
#74 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(144): Illuminate\\Foundation\\Http\\Kernel->sendRequestThroughRouter(Object(Illuminate\\Http\\Request))
#75 /Users/isaacfennell/Sites/your-project-name/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(1220): Illuminate\\Foundation\\Http\\Kernel->handle(Object(Illuminate\\Http\\Request))
#76 /Users/isaacfennell/Sites/your-project-name/public/index.php(20): Illuminate\\Foundation\\Application->handleRequest(Object(Illuminate\\Http\\Request))
#77 /Users/isaacfennell/.composer/vendor/laravel/valet/server.php(110): require('/Users/isaacfen...')
#78 {main}
"}

Environment

Environment
Application Name: Statamic
Laravel Version: 12.53.0
PHP Version: 8.4.15
Composer Version: 2.9.2
Environment: local
Debug Mode: ENABLED
URL: your-project-name.test
Maintenance Mode: OFF
Timezone: UTC
Locale: en

Cache
Config: NOT CACHED
Events: NOT CACHED
Routes: NOT CACHED
Views: CACHED

Drivers
Broadcasting: log
Cache: file
Database: sqlite
Logs: stack / single
Mail: log
Queue: sync
Session: file

Storage
public/storage: NOT LINKED

Statamic
Addons: 0
Sites: 1
Stache Watcher: Enabled (auto)
Static Caching: Disabled
Version: 6.3.3 Solo

Installation

Fresh statamic/statamic site via CLI

Additional details

No response

[duncanmcclean]

Where did you get min_filesize from?

[spaceballstheuser]