# Radsystems Tutorial - Downloading and Installing Radsystems Studio **URL:** \ **Category:** Tutorials\ **Created:** [May 14, 2022, 4:14pm UTC](https://forum.radsystems.io/t/radsystems-tutorial-downloading-and-installing-radsystems-studio/859 "2022-05-14T16:14:11Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![willvin](https://forum.radsystems.io/user_avatar/forum.radsystems.io/willvin/32/7_2.png) [@willvin](https://forum.radsystems.io/u/willvin)\ **Post date:** [May 14, 2022, 4:14pm UTC](https://forum.radsystems.io/t/radsystems-tutorial-downloading-and-installing-radsystems-studio/859/1 "2022-05-14T16:14:11Z")
[![](https://forum.radsystems.io/uploads/default/original/1X/c68d91bf5f289e76fe534eeca1aa4698686a3cf1.jpeg "Radsystems Tutorial - Downloading and Installing Radsystems Studio") ](https://www.youtube.com/watch?v=AjilBLh_dyo) ---
**Author:** ![utf200](https://forum.radsystems.io/letter_avatar_proxy/v4/letter/u/a9a28c/32.png) [@utf200](https://forum.radsystems.io/u/utf200)\ **Post date:** [April 27, 2023, 10:43am UTC](https://forum.radsystems.io/t/radsystems-tutorial-downloading-and-installing-radsystems-studio/859/2 "2023-04-27T10:43:38Z")
PHP Fatal error: During inheritance of ArrayAccess: Uncaught ErrorException: Return type of Illuminate\Support\Collection::offsetExists($key) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in C:\Users\yourl\Documents\RadSystems\PHPRad Classic Projects\franklin&franklin\vendor\laravel\framework\src\Illuminate\Support\Collection.php:1349 Stack trace: #0 C:\Users\yourl\Documents\RadSystems\PHPRad Classic Projects\franklin&franklin\vendor\laravel\framework\src\Illuminate\Support\Collection.php(11): Illuminate\Foundation\Bootstrap\HandleExceptions-\>handleError(8192, ‘Return type of …’, ‘C:\Users\yourl\…’, 1349) #1 C:\Users\yourl\Documents\RadSystems\PHPRad Classic Projects\franklin&franklin\vendor\composer\ClassLoader.php(582): include(‘C:\Users\yourl\…’) #2 C:\Users\yourl\Documents\RadSystems\PHPRad Classic Projects\franklin&franklin\vendor\composer\ClassLoader.php(433): Composer\Autoload{closure}(‘C:\Users\yourl\…’) #3 C:\Users\yourl\Documents\RadSystems\PHPRad Classic Projects\franklin&franklin\vendor\laravel\framework\src\Illuminate\Support\helpers.php(110): Composer\Autoload\ClassLoader-\>loadClass(‘Illuminate\Supp…’) #4 C:\Users\yourl\Documents\RadSystems\PHPRad Classic Projects\franklin&franklin\vendor\laravel\framework\src\Illuminate\Foundation\PackageManifest.php(130): collect(Array) #5 C:\Users\yourl\Documents\RadSystems\PHPRad Classic Projects\franklin&franklin\vendor\laravel\framework\src\Illuminate\Foundation\PackageManifest.php(106): Illuminate\Foundation\PackageManifest-\>build() #6 C:\Users\yourl\Documents\RadSystems\PHPRad Classic Projects\franklin&franklin\vendor\laravel\framework\src\Illuminate\Foundation\PackageManifest.php(89): Illuminate\Foundation\PackageManifest-\>getManifest() #7 C:\Users\yourl\Documents\RadSystems\PHPRad Classic Projects\franklin&franklin\vendor\laravel\framework\src\Illuminate\Foundation\PackageManifest.php(78): Illuminate\Foundation\PackageManifest-\>config(‘aliases’) #8 C:\Users\yourl\Documents\RadSystems\PHPRad Classic Projects\franklin&franklin\vendor\laravel\framework\src\Illuminate\Foundation\Bootstrap\RegisterFacades.php(26): Illuminate\Foundation\PackageManifest-\>aliases() #9 C:\Users\yourl\Documents\RadSystems\PHPRad Classic Projects\franklin&franklin\vendor\laravel\framework\src\Illuminate\Foundation\Application.php(230): Illuminate\Foundation\Bootstrap\RegisterFacades-\>bootstrap(Object(Illuminate\Foundation\Application)) #10 C:\Users\yourl\Documents\RadSystems\PHPRad Classic Projects\franklin&franklin\vendor\laravel\framework\src\Illuminate\Foundation\Console\Kernel.php(310): Illuminate\Foundation\Application-\>bootstrapWith(Array) #11 C:\Users\yourl\Documents\RadSystems\PHPRad Classic Projects\franklin&franklin\vendor\laravel\framework\src\Illuminate\Foundation\Console\Kernel.php(127): Illuminate\Foundation\Console\Kernel-\>bootstrap() #12 C:\Users\yourl\Documents\RadSystems\PHPRad Classic Projects\franklin&franklin\artisan(35): Illuminate\Foundation\Console\Kernel-\>handle(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput)) #13 {main} in C:\Users\yourl\Documents\RadSystems\PHPRad Classic Projects\franklin&franklin\vendor\laravel\framework\src\Illuminate\Support\Collection.php on line 11 In Collection.php line 11: During inheritance of ArrayAccess: Uncaught ErrorException: Return type of Illuminate\Support\Collection::offsetExists($key) should either be compatib le with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTyp eWillChange] attribute should be used to temporarily suppress the notice in C:\Users\yourl\Documents\RadSystems\PHPRad Classic Projects\franklin&frank lin\vendor\laravel\framework\src\Illuminate\Support\Collection.php:1349 Stack trace: #0 C:\Users\yourl\Documents\RadSystems\PHPRad Classic Projects\franklin&fra nklin\vendor\laravel\framework\src\Illuminate\Support\Collection.php(11): I lluminate\Foundation\Bootstrap\HandleExceptions-\>handleError(8192, ‘Return type of …’, ‘C:\Users\yourl\…’, 1349) #1 C:\Users\yourl\Documents\RadSystems\PHPRad Classic Projects\franklin&fra nklin\vendor\composer\ClassLoader.php(582): include(‘C:\Users\yourl\…’ ) #2 C:\Users\yourl\Documents\RadSystems\PHPRad Classic Projects\franklin&fra nklin\vendor\composer\ClassLoader.php(433): Composer\Autoload{closure}(‘C: \Users\yourl\…’) #3 C:\Users\yourl\Documents\RadSystems\PHPRad Classic Projects\franklin&fra nklin\vendor\laravel\framework\src\Illuminate\Support\helpers.php(110): Com poser\Autoload\ClassLoader-\>loadClass(‘Illuminate\Supp…’) #4 C:\Users\yourl\Documents\RadSystems\PHPRad Classic Projects\franklin&fra nklin\vendor\laravel\framework\src\Illuminate\Foundation\PackageManifest.ph p(130): collect(Array) #5 C:\Users\yourl\Documents\RadSystems\PHPRad Classic Projects\franklin&fra nklin\vendor\laravel\framework\src\Illuminate\Foundation\PackageManifest.ph p(106): Illuminate\Foundation\PackageManifest-\>build() #6 C:\Users\yourl\Documents\RadSystems\PHPRad Classic Projects\franklin&fra nklin\vendor\laravel\framework\src\Illuminate\Foundation\PackageManifest.ph p(89): Illuminate\Foundation\PackageManifest-\>getManifest() #7 C:\Users\yourl\Documents\RadSystems\PHPRad Classic Projects\franklin&fra nklin\vendor\laravel\framework\src\Illuminate\Foundation\PackageManifest.ph p(78): Illuminate\Foundation\PackageManifest-\>config(‘aliases’) #8 C:\Users\yourl\Documents\RadSystems\PHPRad Classic Projects\franklin&fra nklin\vendor\laravel\framework\src\Illuminate\Foundation\Bootstrap\Register Facades.php(26): Illuminate\Foundation\PackageManifest-\>aliases() #9 C:\Users\yourl\Documents\RadSystems\PHPRad Classic Projects\franklin&fra nklin\vendor\laravel\framework\src\Illuminate\Foundation\Application.php(23 0): Illuminate\Foundation\Bootstrap\RegisterFacades-\>bootstrap(Object(Illum inate\Foundation\Application)) #10 C:\Users\yourl\Documents\RadSystems\PHPRad Classic Projects\franklin&fr anklin\vendor\laravel\framework\src\Illuminate\Foundation\Console\Kernel.ph p(310): Illuminate\Foundation\Application-\>bootstrapWith(Array) #11 C:\Users\yourl\Documents\RadSystems\PHPRad Classic Projects\franklin&fr anklin\vendor\laravel\framework\src\Illuminate\Foundation\Console\Kernel.ph p(127): Illuminate\Foundation\Console\Kernel-\>bootstrap() #12 C:\Users\yourl\Documents\RadSystems\PHPRad Classic Projects\franklin&fr anklin\artisan(35): Illuminate\Foundation\Console\Kernel-\>handle(Object(Sym fony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\O utput\ConsoleOutput)) #13 {main} ---
**Author:** ![willvin](https://forum.radsystems.io/user_avatar/forum.radsystems.io/willvin/32/7_2.png) [@willvin](https://forum.radsystems.io/u/willvin)\ **Post date:** [April 27, 2023, 10:49am UTC](https://forum.radsystems.io/t/radsystems-tutorial-downloading-and-installing-radsystems-studio/859/3 "2023-04-27T10:49:05Z")
Use the recommended PHP version as indicated on the Radsystems Studio download page.