[8.x] Fix incompatibility with Lumen route function which return an array.

[nabihnadhif]

When we use illuminate/session within a lumen project. StartSession middleware fails with the following error:

[2020-09-23 11:43:38] production.ERROR: Call to a member function locksFor() on array {"exception":"[object] (Error(code: 0): Call to a member function locksFor() on array at /var/www/html/vendor/illuminate/session/Middleware/StartSession.php:59)
[stacktrace]
#0 /var/www/html/vendor/illuminate/pipeline/Pipeline.php(167): Illuminate\\Session\\Middleware\\StartSession->handle(Object(Laravel\\Lumen\\Http\\Request), Object(Closure))
#1 [internal function]: Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Laravel\\Lumen\\Http\\Request))
#2 /var/www/html/vendor/laravel/lumen-framework/src/Routing/Pipeline.php(30): call_user_func(Object(Closure), Object(Laravel\\Lumen\\Http\\Request))
#3 /var/www/html/vendor/illuminate/pipeline/Pipeline.php(103): Laravel\\Lumen\\Routing\\Pipeline->Laravel\\Lumen\\Routing\\{closure}(Object(Laravel\\Lumen\\Http\\Request))
#4 /var/www/html/vendor/laravel/lumen-framework/src/Concerns/RoutesRequests.php(423): Illuminate\\Pipeline\\Pipeline->then(Object(Closure))
#5 /var/www/html/vendor/laravel/lumen-framework/src/Concerns/RoutesRequests.php(260): Laravel\\Lumen\\Application->sendThroughPipeline(Array, Object(Closure))
#6 /var/www/html/vendor/laravel/lumen-framework/src/Concerns/RoutesRequests.php(234): Laravel\\Lumen\\Application->handleFoundRoute(Array)
#7 /var/www/html/vendor/laravel/lumen-framework/src/Concerns/RoutesRequests.php(170): Laravel\\Lumen\\Application->handleDispatcherResponse(Array)
#8 [internal function]: Laravel\\Lumen\\Application->Laravel\\Lumen\\Concerns\\{closure}(Object(Laravel\\Lumen\\Http\\Request))
#9 /var/www/html/vendor/laravel/lumen-framework/src/Routing/Pipeline.php(48): call_user_func(Object(Closure), Object(Laravel\\Lumen\\Http\\Request))
#10 /var/www/html/vendor/total-services/core/src/Http/Middleware/LocaleMiddleware.php(33): Laravel\\Lumen\\Routing\\Pipeline->Laravel\\Lumen\\Routing\\{closure}(Object(Laravel\\Lumen\\Http\\Request))
#11 /var/www/html/vendor/illuminate/pipeline/Pipeline.php(167): TotalServices\\Core\\Http\\Middleware\\LocaleMiddleware->handle(Object(Laravel\\Lumen\\Http\\Request), Object(Closure))
#12 [internal function]: Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Laravel\\Lumen\\Http\\Request))
#13 /var/www/html/vendor/laravel/lumen-framework/src/Routing/Pipeline.php(30): call_user_func(Object(Closure), Object(Laravel\\Lumen\\Http\\Request))
#14 /var/www/html/vendor/total-services/core/src/Http/Middleware/XForwardedPathMiddleware.php(30): Laravel\\Lumen\\Routing\\Pipeline->Laravel\\Lumen\\Routing\\{closure}(Object(Laravel\\Lumen\\Http\\Request))
#15 /var/www/html/vendor/illuminate/pipeline/Pipeline.php(167): TotalServices\\Core\\Http\\Middleware\\XForwardedPathMiddleware->handle(Object(Laravel\\Lumen\\Http\\Request), Object(Closure))
#16 [internal function]: Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Laravel\\Lumen\\Http\\Request))
#17 /var/www/html/vendor/laravel/lumen-framework/src/Routing/Pipeline.php(30): call_user_func(Object(Closure), Object(Laravel\\Lumen\\Http\\Request))
#18 /var/www/html/vendor/fideloper/proxy/src/TrustProxies.php(57): Laravel\\Lumen\\Routing\\Pipeline->Laravel\\Lumen\\Routing\\{closure}(Object(Laravel\\Lumen\\Http\\Request))
#19 /var/www/html/vendor/illuminate/pipeline/Pipeline.php(167): Fideloper\\Proxy\\TrustProxies->handle(Object(Laravel\\Lumen\\Http\\Request), Object(Closure))
#20 [internal function]: Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Laravel\\Lumen\\Http\\Request))
#21 /var/www/html/vendor/laravel/lumen-framework/src/Routing/Pipeline.php(30): call_user_func(Object(Closure), Object(Laravel\\Lumen\\Http\\Request))
#22 /var/www/html/vendor/total-services/core/src/Http/Middleware/ConvertStringBooleansMiddleware.php(25): Laravel\\Lumen\\Routing\\Pipeline->Laravel\\Lumen\\Routing\\{closure}(Object(Laravel\\Lumen\\Http\\Request))
#23 /var/www/html/vendor/illuminate/pipeline/Pipeline.php(167): TotalServices\\Core\\Http\\Middleware\\ConvertStringBooleansMiddleware->handle(Object(Laravel\\Lumen\\Http\\Request), Object(Closure))
#24 [internal function]: Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Laravel\\Lumen\\Http\\Request))
#25 /var/www/html/vendor/laravel/lumen-framework/src/Routing/Pipeline.php(30): call_user_func(Object(Closure), Object(Laravel\\Lumen\\Http\\Request))
#26 /var/www/html/vendor/total-services/core/src/Http/Middleware/ConvertEmptyStringsToNull.php(15): Laravel\\Lumen\\Routing\\Pipeline->Laravel\\Lumen\\Routing\\{closure}(Object(Laravel\\Lumen\\Http\\Request))
#27 /var/www/html/vendor/illuminate/pipeline/Pipeline.php(167): TotalServices\\Core\\Http\\Middleware\\ConvertEmptyStringsToNull->handle(Object(Laravel\\Lumen\\Http\\Request), Object(Closure))
#28 [internal function]: Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Laravel\\Lumen\\Http\\Request))
#29 /var/www/html/vendor/laravel/lumen-framework/src/Routing/Pipeline.php(30): call_user_func(Object(Closure), Object(Laravel\\Lumen\\Http\\Request))
#30 /var/www/html/vendor/total-services/core/src/Http/Middleware/MaintenanceModeMiddleware.php(30): Laravel\\Lumen\\Routing\\Pipeline->Laravel\\Lumen\\Routing\\{closure}(Object(Laravel\\Lumen\\Http\\Request))
#31 /var/www/html/vendor/illuminate/pipeline/Pipeline.php(167): TotalServices\\Core\\Http\\Middleware\\MaintenanceModeMiddleware->handle(Object(Laravel\\Lumen\\Http\\Request), Object(Closure))
#32 [internal function]: Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Laravel\\Lumen\\Http\\Request))
#33 /var/www/html/vendor/laravel/lumen-framework/src/Routing/Pipeline.php(30): call_user_func(Object(Closure), Object(Laravel\\Lumen\\Http\\Request))
#34 /var/www/html/vendor/total-services/core/src/Http/Middleware/CountryBlockerMiddleware.php(40): Laravel\\Lumen\\Routing\\Pipeline->Laravel\\Lumen\\Routing\\{closure}(Object(Laravel\\Lumen\\Http\\Request))
#35 /var/www/html/vendor/illuminate/pipeline/Pipeline.php(167): TotalServices\\Core\\Http\\Middleware\\CountryBlockerMiddleware->handle(Object(Laravel\\Lumen\\Http\\Request), Object(Closure))
#36 [internal function]: Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Laravel\\Lumen\\Http\\Request))
#37 /var/www/html/vendor/laravel/lumen-framework/src/Routing/Pipeline.php(30): call_user_func(Object(Closure), Object(Laravel\\Lumen\\Http\\Request))
#38 /var/www/html/app/Http/Middleware/Cors.php(29): Laravel\\Lumen\\Routing\\Pipeline->Laravel\\Lumen\\Routing\\{closure}(Object(Laravel\\Lumen\\Http\\Request))
#39 /var/www/html/vendor/illuminate/pipeline/Pipeline.php(167): App\\Http\\Middleware\\Cors->handle(Object(Laravel\\Lumen\\Http\\Request), Object(Closure))
#40 [internal function]: Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Laravel\\Lumen\\Http\\Request))
#41 /var/www/html/vendor/laravel/lumen-framework/src/Routing/Pipeline.php(30): call_user_func(Object(Closure), Object(Laravel\\Lumen\\Http\\Request))
#42 /var/www/html/vendor/illuminate/pipeline/Pipeline.php(103): Laravel\\Lumen\\Routing\\Pipeline->Laravel\\Lumen\\Routing\\{closure}(Object(Laravel\\Lumen\\Http\\Request))
#43 /var/www/html/vendor/laravel/lumen-framework/src/Concerns/RoutesRequests.php(423): Illuminate\\Pipeline\\Pipeline->then(Object(Closure))
#44 /var/www/html/vendor/laravel/lumen-framework/src/Concerns/RoutesRequests.php(172): Laravel\\Lumen\\Application->sendThroughPipeline(Array, Object(Closure))
#45 /var/www/html/vendor/laravel/lumen-framework/src/Concerns/RoutesRequests.php(109): Laravel\\Lumen\\Application->dispatch(NULL)
#46 /var/www/html/public/index.php(17): Laravel\\Lumen\\Application->run()
#47 {main}
"} 

The reason is that Laravel\Lumen\Http\Request::route() return array|null when Illuminate\Http\Request::route() return Illuminate\Routing\Route|object|null.