My errors during installations

(3/3) QueryException

SQLSTATE[HY000] [2002] Connection refused (SQL: insert into `ak_companies` (`domain`, `updated_at`, `created_at`) values (, 2018-11-12 19:12:34, 2018-11-12 19:12:34))

in Connection.php line 647


at Connection->runQueryCallback('insert into `ak_companies` (`domain`, `updated_at`, `created_at`) values (?, ?, ?)', array('', '2018-11-12 19:12:34', '2018-11-12 19:12:34'), object(Closure))in Connection.php line 607


at Connection->run('insert into `ak_companies` (`domain`, `updated_at`, `created_at`) values (?, ?, ?)', array('', '2018-11-12 19:12:34', '2018-11-12 19:12:34'), object(Closure))in Connection.php line 450


at Connection->statement('insert into `ak_companies` (`domain`, `updated_at`, `created_at`) values (?, ?, ?)', array('', '2018-11-12 19:12:34', '2018-11-12 19:12:34'))in Connection.php line 404


at Connection->insert('insert into `ak_companies` (`domain`, `updated_at`, `created_at`) values (?, ?, ?)', array('', '2018-11-12 19:12:34', '2018-11-12 19:12:34'))in Processor.php line 32


at Processor->processInsertGetId(object(Builder), 'insert into `ak_companies` (`domain`, `updated_at`, `created_at`) values (?, ?, ?)', array('', '2018-11-12 19:12:34', '2018-11-12 19:12:34'), 'id')in Builder.php line 2133


at Builder->insertGetId(array('', '2018-11-12 19:12:34', '2018-11-12 19:12:34'), 'id')in Builder.php line 1251


at Builder->__call('insertGetId', array(array('domain' => '', 'updated_at' => '2018-11-12 19:12:34', 'created_at' => '2018-11-12 19:12:34'), 'id'))in Model.php line 688


at Model->insertAndSetId(object(Builder), array('domain' => '', 'updated_at' => '2018-11-12 19:12:34', 'created_at' => '2018-11-12 19:12:34'))in Model.php line 653


at Model->performInsert(object(Builder))in Model.php line 522


at Model->save()in Builder.php line 734


at Builder->Illuminate\Database\Eloquent\{closure}(object(Company))in helpers.php line 964


at tap(object(Company), object(Closure))in Builder.php line 735


at Builder->create(array('domain' => ''))in Model.php line 1374


at Model->__call('create', array(array('domain' => '')))in Model.php line 1386


at Model::__callStatic('create', array(array('domain' => '')))in Installer.php line 213


at Installer::createCompany('dosch', '[email protected]', 'en-GB')in Settings.php line 31


at Settings->store(object(Setting))


at call_user_func_array(array(object(Settings), 'store'), array(object(Setting)))in Controller.php line 55


at Controller->callAction('store', array(object(Setting)))in ControllerDispatcher.php line 44


at ControllerDispatcher->dispatch(object(Route), object(Settings), 'store')in Route.php line 203


at Route->runController()in Route.php line 160


at Route->run()in Router.php line 572


at Router->Illuminate\Routing\{closure}(object(Request))in Pipeline.php line 30


at Pipeline->Illuminate\Routing\{closure}(object(Request))in CanInstall.php line 20


at CanInstall->handle(object(Request), object(Closure))in Pipeline.php line 148


at Pipeline->Illuminate\Pipeline\{closure}(object(Request))in Pipeline.php line 53


at Pipeline->Illuminate\Routing\{closure}(object(Request))in RedirectIfAuthenticated.php line 28


at RedirectIfAuthenticated->handle(object(Request), object(Closure))in Pipeline.php line 148


at Pipeline->Illuminate\Pipeline\{closure}(object(Request))in Pipeline.php line 53


at Pipeline->Illuminate\Routing\{closure}(object(Request))in SetLocale.php line 94


at SetLocale->handle(object(Request), object(Closure))in Pipeline.php line 148


at Pipeline->Illuminate\Pipeline\{closure}(object(Request))in Pipeline.php line 53


at Pipeline->Illuminate\Routing\{closure}(object(Request))in LoadCurrencies.php line 22


at LoadCurrencies->handle(object(Request), object(Closure))in Pipeline.php line 148


at Pipeline->Illuminate\Pipeline\{closure}(object(Request))in Pipeline.php line 53


at Pipeline->Illuminate\Routing\{closure}(object(Request))in LoadSettings.php line 22


at LoadSettings->handle(object(Request), object(Closure))in Pipeline.php line 148


at Pipeline->Illuminate\Pipeline\{closure}(object(Request))in Pipeline.php line 53


at Pipeline->Illuminate\Routing\{closure}(object(Request))in AddXHeader.php line 18


at AddXHeader->handle(object(Request), object(Closure))in Pipeline.php line 148


at Pipeline->Illuminate\Pipeline\{closure}(object(Request))in Pipeline.php line 53


at Pipeline->Illuminate\Routing\{closure}(object(Request))in RedirectIfNotInstalled.php line 26


at RedirectIfNotInstalled->handle(object(Request), object(Closure))in Pipeline.php line 148


at Pipeline->Illuminate\Pipeline\{closure}(object(Request))in Pipeline.php line 53


at Pipeline->Illuminate\Routing\{closure}(object(Request))in SubstituteBindings.php line 41


at SubstituteBindings->handle(object(Request), object(Closure))in Pipeline.php line 148


at Pipeline->Illuminate\Pipeline\{closure}(object(Request))in Pipeline.php line 53


at Pipeline->Illuminate\Routing\{closure}(object(Request))in VerifyCsrfToken.php line 65


at VerifyCsrfToken->handle(object(Request), object(Closure))in Pipeline.php line 148


at Pipeline->Illuminate\Pipeline\{closure}(object(Request))in Pipeline.php line 53


at Pipeline->Illuminate\Routing\{closure}(object(Request))in ShareErrorsFromSession.php line 49


at ShareErrorsFromSession->handle(object(Request), object(Closure))in Pipeline.php line 148


at Pipeline->Illuminate\Pipeline\{closure}(object(Request))in Pipeline.php line 53


at Pipeline->Illuminate\Routing\{closure}(object(Request))in StartSession.php line 64


at StartSession->handle(object(Request), object(Closure))in Pipeline.php line 148


at Pipeline->Illuminate\Pipeline\{closure}(object(Request))in Pipeline.php line 53


at Pipeline->Illuminate\Routing\{closure}(object(Request))in AddQueuedCookiesToResponse.php line 37


at AddQueuedCookiesToResponse->handle(object(Request), object(Closure))in Pipeline.php line 148


at Pipeline->Illuminate\Pipeline\{closure}(object(Request))in Pipeline.php line 53


at Pipeline->Illuminate\Routing\{closure}(object(Request))in EncryptCookies.php line 59


at EncryptCookies->handle(object(Request), object(Closure))in Pipeline.php line 148


at Pipeline->Illuminate\Pipeline\{closure}(object(Request))in Pipeline.php line 53


at Pipeline->Illuminate\Routing\{closure}(object(Request))in Pipeline.php line 102


at Pipeline->then(object(Closure))in Router.php line 574


at Router->runRouteWithinStack(object(Route), object(Request))in Router.php line 533


at Router->dispatchToRoute(object(Request))in Router.php line 511


at Router->dispatch(object(Request))in Kernel.php line 176


at Kernel->Illuminate\Foundation\Http\{closure}(object(Request))in Pipeline.php line 30


at Pipeline->Illuminate\Routing\{closure}(object(Request))in TrustProxies.php line 56


at TrustProxies->handle(object(Request), object(Closure))in Pipeline.php line 148


at Pipeline->Illuminate\Pipeline\{closure}(object(Request))in Pipeline.php line 53


at Pipeline->Illuminate\Routing\{closure}(object(Request))in TransformsRequest.php line 30


at TransformsRequest->handle(object(Request), object(Closure))in Pipeline.php line 148


at Pipeline->Illuminate\Pipeline\{closure}(object(Request))in Pipeline.php line 53


at Pipeline->Illuminate\Routing\{closure}(object(Request))in TransformsRequest.php line 30


at TransformsRequest->handle(object(Request), object(Closure))in Pipeline.php line 148


at Pipeline->Illuminate\Pipeline\{closure}(object(Request))in Pipeline.php line 53


at Pipeline->Illuminate\Routing\{closure}(object(Request))in ValidatePostSize.php line 27


at ValidatePostSize->handle(object(Request), object(Closure))in Pipeline.php line 148


at Pipeline->Illuminate\Pipeline\{closure}(object(Request))in Pipeline.php line 53


at Pipeline->Illuminate\Routing\{closure}(object(Request))in CheckForMaintenanceMode.php line 46


at CheckForMaintenanceMode->handle(object(Request), object(Closure))in Pipeline.php line 148


at Pipeline->Illuminate\Pipeline\{closure}(object(Request))in Pipeline.php line 53


at Pipeline->Illuminate\Routing\{closure}(object(Request))in Request.php line 111


at Request->handle(object(Request), object(Closure))in Pipeline.php line 148


at Pipeline->Illuminate\Pipeline\{closure}(object(Request))in Pipeline.php line 53


at Pipeline->Illuminate\Routing\{closure}(object(Request))in Pipeline.php line 102


at Pipeline->then(object(Closure))in Kernel.php line 151


at Kernel->sendRequestThroughRouter(object(Request))in Kernel.php line 116


at Kernel->handle(object(Request))in index.php line 27