I am using the latest v1.6.2
POST https://www.example.com/api/discussions/131
TypeError: array_map(): Argument #2 ($array) must be of type array, null given in /home/USERNAME/example.com/main/extend.php:32
Stack trace:
#0 /home/USERNAME/example.com/main/extend.php(32): array_map()
#1 /home/USERNAME/example.com/main/vendor/flarum/core/src/Foundation/AbstractValidator.php(97): Flarum\Foundation\Site::{closure}()
#2 /home/USERNAME/example.com/main/vendor/flarum/core/src/Foundation/AbstractValidator.php(61): Flarum\Foundation\AbstractValidator->makeValidator()
#3 /home/USERNAME/example.com/main/vendor/flarum/core/src/Discussion/Command/EditDiscussionHandler.php(78): Flarum\Foundation\AbstractValidator->assertValid()
#4 /home/USERNAME/example.com/main/vendor/illuminate/bus/Dispatcher.php(122): Flarum\Discussion\Command\EditDiscussionHandler->handle()
#5 /home/USERNAME/example.com/main/vendor/illuminate/pipeline/Pipeline.php(128): Illuminate\Bus\Dispatcher->Illuminate\Bus\{closure}()
#6 /home/USERNAME/example.com/main/vendor/illuminate/pipeline/Pipeline.php(103): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}()
#7 /home/USERNAME/example.com/main/vendor/illuminate/bus/Dispatcher.php(132): Illuminate\Pipeline\Pipeline->then()
#8 /home/USERNAME/example.com/main/vendor/illuminate/bus/Dispatcher.php(78): Illuminate\Bus\Dispatcher->dispatchNow()
#9 /home/USERNAME/example.com/main/vendor/flarum/core/src/Api/Controller/UpdateDiscussionController.php(52): Illuminate\Bus\Dispatcher->dispatch()
#10 /home/USERNAME/example.com/main/vendor/flarum/core/src/Api/Controller/AbstractSerializeController.php(116): Flarum\Api\Controller\UpdateDiscussionController->data()
#11 /home/USERNAME/example.com/main/vendor/flarum/core/src/Http/RouteHandlerFactory.php(41): Flarum\Api\Controller\AbstractSerializeController->handle()
#12 /home/USERNAME/example.com/main/vendor/flarum/core/src/Http/Middleware/ExecuteRoute.php(27): Flarum\Http\RouteHandlerFactory->Flarum\Http\{closure}()
#13 /home/USERNAME/example.com/main/vendor/laminas/laminas-stratigility/src/Next.php(49): Flarum\Http\Middleware\ExecuteRoute->process()
#14 /home/USERNAME/example.com/main/vendor/flarum/core/src/Api/Middleware/ThrottleApi.php(33): Laminas\Stratigility\Next->handle()
#15 /home/USERNAME/example.com/main/vendor/laminas/laminas-stratigility/src/Next.php(49): Flarum\Api\Middleware\ThrottleApi->process()
#16 /home/USERNAME/example.com/main/vendor/flarum/core/src/Http/Middleware/CheckCsrfToken.php(44): Laminas\Stratigility\Next->handle()
#17 /home/USERNAME/example.com/main/vendor/laminas/laminas-stratigility/src/Next.php(49): Flarum\Http\Middleware\CheckCsrfToken->process()
#18 /home/USERNAME/example.com/main/vendor/flarum/core/src/Http/Middleware/ResolveRoute.php(69): Laminas\Stratigility\Next->handle()
#19 /home/USERNAME/example.com/main/vendor/laminas/laminas-stratigility/src/Next.php(49): Flarum\Http\Middleware\ResolveRoute->process()
#20 /home/USERNAME/example.com/main/vendor/flarum/core/src/Http/Middleware/SetLocale.php(51): Laminas\Stratigility\Next->handle()
#21 /home/USERNAME/example.com/main/vendor/laminas/laminas-stratigility/src/Next.php(49): Flarum\Http\Middleware\SetLocale->process()
#22 /home/USERNAME/example.com/main/vendor/flarum/core/src/Http/Middleware/AuthenticateWithHeader.php(58): Laminas\Stratigility\Next->handle()
#23 /home/USERNAME/example.com/main/vendor/laminas/laminas-stratigility/src/Next.php(49): Flarum\Http\Middleware\AuthenticateWithHeader->process()
#24 /home/USERNAME/example.com/main/vendor/flarum/core/src/Http/Middleware/AuthenticateWithSession.php(31): Laminas\Stratigility\Next->handle()
#25 /home/USERNAME/example.com/main/vendor/laminas/laminas-stratigility/src/Next.php(49): Flarum\Http\Middleware\AuthenticateWithSession->process()
#26 /home/USERNAME/example.com/main/vendor/flarum/core/src/Http/Middleware/RememberFromCookie.php(52): Laminas\Stratigility\Next->handle()
#27 /home/USERNAME/example.com/main/vendor/laminas/laminas-stratigility/src/Next.php(49): Flarum\Http\Middleware\RememberFromCookie->process()
#28 /home/USERNAME/example.com/main/vendor/flarum/core/src/Http/Middleware/StartSession.php(61): Laminas\Stratigility\Next->handle()
#29 /home/USERNAME/example.com/main/vendor/laminas/laminas-stratigility/src/Next.php(49): Flarum\Http\Middleware\StartSession->process()
#30 /home/USERNAME/example.com/main/vendor/flarum/core/src/Api/Middleware/FakeHttpMethods.php(29): Laminas\Stratigility\Next->handle()
#31 /home/USERNAME/example.com/main/vendor/laminas/laminas-stratigility/src/Next.php(49): Flarum\Api\Middleware\FakeHttpMethods->process()
#32 /home/USERNAME/example.com/main/vendor/flarum/core/src/Http/Middleware/ParseJsonBody.php(28): Laminas\Stratigility\Next->handle()
#33 /home/USERNAME/example.com/main/vendor/laminas/laminas-stratigility/src/Next.php(49): Flarum\Http\Middleware\ParseJsonBody->process()
#34 /home/USERNAME/example.com/main/vendor/flarum/core/src/Http/Middleware/HandleErrors.php(57): Laminas\Stratigility\Next->handle()
#35 /home/USERNAME/example.com/main/vendor/laminas/laminas-stratigility/src/Next.php(49): Flarum\Http\Middleware\HandleErrors->process()
#36 /home/USERNAME/example.com/main/vendor/flarum/core/src/Http/Middleware/InjectActorReference.php(25): Laminas\Stratigility\Next->handle()
#37 /home/USERNAME/example.com/main/vendor/laminas/laminas-stratigility/src/Next.php(49): Flarum\Http\Middleware\InjectActorReference->process()
#38 /home/USERNAME/example.com/main/vendor/laminas/laminas-stratigility/src/MiddlewarePipe.php(75): Laminas\Stratigility\Next->handle()
#39 /home/USERNAME/example.com/main/vendor/middlewares/request-handler/src/RequestHandler.php(84): Laminas\Stratigility\MiddlewarePipe->process()
#40 /home/USERNAME/example.com/main/vendor/laminas/laminas-stratigility/src/Next.php(49): Middlewares\RequestHandler->process()
#41 /home/USERNAME/example.com/main/vendor/middlewares/base-path-router/src/BasePathRouter.php(101): Laminas\Stratigility\Next->handle()
#42 /home/USERNAME/example.com/main/vendor/laminas/laminas-stratigility/src/Next.php(49): Middlewares\BasePathRouter->process()
#43 /home/USERNAME/example.com/main/vendor/laminas/laminas-stratigility/src/Middleware/OriginalMessages.php(36): Laminas\Stratigility\Next->handle()
#44 /home/USERNAME/example.com/main/vendor/laminas/laminas-stratigility/src/Next.php(49): Laminas\Stratigility\Middleware\OriginalMessages->process()
#45 /home/USERNAME/example.com/main/vendor/middlewares/base-path/src/BasePath.php(73): Laminas\Stratigility\Next->handle()
#46 /home/USERNAME/example.com/main/vendor/laminas/laminas-stratigility/src/Next.php(49): Middlewares\BasePath->process()
#47 /home/USERNAME/example.com/main/vendor/flarum/core/src/Http/Middleware/ProcessIp.php(24): Laminas\Stratigility\Next->handle()
#48 /home/USERNAME/example.com/main/vendor/laminas/laminas-stratigility/src/Next.php(49): Flarum\Http\Middleware\ProcessIp->process()
#49 /home/USERNAME/example.com/main/vendor/laminas/laminas-stratigility/src/MiddlewarePipe.php(75): Laminas\Stratigility\Next->handle()
#50 /home/USERNAME/example.com/main/vendor/laminas/laminas-stratigility/src/MiddlewarePipe.php(64): Laminas\Stratigility\MiddlewarePipe->process()
#51 /home/USERNAME/example.com/main/vendor/laminas/laminas-httphandlerrunner/src/RequestHandlerRunner.php(96): Laminas\Stratigility\MiddlewarePipe->handle()
#52 /home/USERNAME/example.com/main/vendor/flarum/core/src/Http/Server.php(45): Laminas\HttpHandlerRunner\RequestHandlerRunner->run()
#53 /home/USERNAME/example.com/main/public/index.php(26): Flarum\Http\Server->listen()
#54 {main}