Stack trace:
#0 /var/www/snipeit/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/StreamBuffer.php(58): Swift_Transport_StreamBuffer->establishSocketConnection()
#1 /var/www/snipeit/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/AbstractSmtpTransport.php(143): Swift_Transport_StreamBuffer->initialize(Array)
#2 /var/www/snipeit/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Mailer.php(65): Swift_Transport_AbstractSmtpTransport->start()
#3 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Mail/Mailer.php(451): Swift_Mailer->send(Object(Swift_Message), Array)
#4 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Mail/Mailer.php(235): Illuminate\Mail\Mailer->sendSwiftMessage(Object(Swift_Message))
#5 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Notifications/Channels/MailChannel.php(64): Illuminate\Mail\Mailer->send(Object(Illuminate\Support\HtmlString), Array, Object(Closure))
#6 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Notifications/NotificationSender.php(113): Illuminate\Notifications\Channels\MailChannel->send(Object(Spatie\Backup\Notifications\Notifiable), Object(Spatie\Backup\Notifications\Notifications\BackupHasFailed))
#7 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Notifications/NotificationSender.php(89): Illuminate\Notifications\NotificationSender->sendToNotifiable(Object(Spatie\Backup\Notifications\Notifiable), 'b790e064-9792-4...', Object(Spatie\Backup\Notifications\Notifications\BackupHasFailed), 'mail')
#8 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Notifications/NotificationSender.php(64): Illuminate\Notifications\NotificationSender->sendNow(Array, Object(Spatie\Backup\Notifications\Notifications\BackupHasFailed))
#9 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Notifications/ChannelManager.php(35): Illuminate\Notifications\NotificationSender->send(Array, Object(Spatie\Backup\Notifications\Notifications\BackupHasFailed))
#10 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Notifications/RoutesNotifications.php(18): Illuminate\Notifications\ChannelManager->send(Object(Spatie\Backup\Notifications\Notifiable), Object(Spatie\Backup\Notifications\Notifications\BackupHasFailed))
#11 /var/www/snipeit/vendor/spatie/laravel-backup/src/Notifications/EventHandler.php(33): Spatie\Backup\Notifications\Notifiable->notify(Object(Spatie\Backup\Notifications\Notifications\BackupHasFailed))
#12 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Events/Dispatcher.php(350): Spatie\Backup\Notifications\EventHandler->Spatie\Backup\Notifications\{closure}(Object(Spatie\Backup\Events\BackupHasFailed))
#13 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Events/Dispatcher.php(200): Illuminate\Events\Dispatcher->Illuminate\Events\{closure}('Spatie\\Backup\\E...', Array)
#14 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Foundation/helpers.php(467): Illuminate\Events\Dispatcher->dispatch('Spatie\\Backup\\E...')
#15 /var/www/snipeit/vendor/spatie/laravel-backup/src/Commands/BackupCommand.php(59): event(Object(Spatie\Backup\Events\BackupHasFailed))
#16 [internal function]: Spatie\Backup\Commands\BackupCommand->handle()
#17 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Container/BoundMethod.php(29): call_user_func_array(Array, Array)
#18 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Container/BoundMethod.php(87): Illuminate\Container\BoundMethod::Illuminate\Container\{closure}()
#19 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Container/BoundMethod.php(31): Illuminate\Container\BoundMethod::callBoundMethod(Object(Illuminate\Foundation\Application), Array, Object(Closure))
#20 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Container/Container.php(549): Illuminate\Container\BoundMethod::call(Object(Illuminate\Foundation\Application), Array, Array, NULL)
#21 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Console/Command.php(183): Illuminate\Container\Container->call(Array)
#22 /var/www/snipeit/vendor/symfony/console/Command/Command.php(255): Illuminate\Console\Command->execute(Object(Symfony\Component\Console\Input\ArrayInput), Object(Illuminate\Console\OutputStyle))
#23 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Console/Command.php(170): Symfony\Component\Console\Command\Command->run(Object(Symfony\Component\Console\Input\ArrayInput), Object(Illuminate\Console\OutputStyle))
#24 /var/www/snipeit/vendor/spatie/laravel-backup/src/Commands/BaseCommand.php(16): Illuminate\Console\Command->run(Object(Symfony\Component\Console\Input\ArrayInput), Object(Symfony\Component\Console\Output\BufferedOutput))
#25 /var/www/snipeit/vendor/symfony/console/Application.php(960): Spatie\Backup\Commands\BaseCommand->run(Object(Symfony\Component\Console\Input\ArrayInput), Object(Symfony\Component\Console\Output\BufferedOutput))
#26 /var/www/snipeit/vendor/symfony/console/Application.php(255): Symfony\Component\Console\Application->doRunCommand(Object(Spatie\Backup\Commands\BackupCommand), Object(Symfony\Component\Console\Input\ArrayInput), Object(Symfony\Component\Console\Output\BufferedOutput))
#27 /var/www/snipeit/vendor/symfony/console/Application.php(148): Symfony\Component\Console\Application->doRun(Object(Symfony\Component\Console\Input\ArrayInput), Object(Symfony\Component\Console\Output\BufferedOutput))
#28 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Console/Application.php(88): Symfony\Component\Console\Application->run(Object(Symfony\Component\Console\Input\ArrayInput), Object(Symfony\Component\Console\Output\BufferedOutput))
#29 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Console/Application.php(177): Illuminate\Console\Application->run(Object(Symfony\Component\Console\Input\ArrayInput), Object(Symfony\Component\Console\Output\BufferedOutput))
#30 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Foundation/Console/Kernel.php(249): Illuminate\Console\Application->call('backup:run', Object(Illuminate\Support\Collection), NULL)
#31 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Support/Facades/Facade.php(221): Illuminate\Foundation\Console\Kernel->call('backup:run')
#32 /var/www/snipeit/app/Http/Controllers/Api/ImportController.php(122): Illuminate\Support\Facades\Facade::__callStatic('call', Array)
#33 [internal function]: App\Http\Controllers\Api\ImportController->process(Object(App\Http\Requests\ItemImportRequest), '12')
#34 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Routing/Controller.php(54): call_user_func_array(Array, Array)
#35 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php(45): Illuminate\Routing\Controller->callAction('process', Array)
#36 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Routing/Route.php(212): Illuminate\Routing\ControllerDispatcher->dispatch(Object(Illuminate\Routing\Route), Object(App\Http\Controllers\Api\ImportController), 'process')
#37 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Routing/Route.php(169): Illuminate\Routing\Route->runController()
#38 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Routing/Router.php(658): Illuminate\Routing\Route->run()
#39 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(30): Illuminate\Routing\Router->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#40 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Routing/Middleware/ThrottleRequests.php(57): Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#41 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(149): Illuminate\Routing\Middleware\ThrottleRequests->handle(Object(Illuminate\Http\Request), Object(Closure), 120, '1')
#42 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#43 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Auth/Middleware/Authenticate.php(43): Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#44 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(149): Illuminate\Auth\Middleware\Authenticate->handle(Object(Illuminate\Http\Request), Object(Closure), 'api')
#45 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#46 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(102): Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#47 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Routing/Router.php(660): Illuminate\Pipeline\Pipeline->then(Object(Closure))
#48 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Routing/Router.php(635): Illuminate\Routing\Router->runRouteWithinStack(Object(Illuminate\Routing\Route), Object(Illuminate\Http\Request))
#49 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Routing/Router.php(601): Illuminate\Routing\Router->runRoute(Object(Illuminate\Http\Request), Object(Illuminate\Routing\Route))
#50 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Routing/Router.php(590): Illuminate\Routing\Router->dispatchToRoute(Object(Illuminate\Http\Request))
#51 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(176): Illuminate\Routing\Router->dispatch(Object(Illuminate\Http\Request))
#52 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(30): Illuminate\Foundation\Http\Kernel->Illuminate\Foundation\Http\{closure}(Object(Illuminate\Http\Request))
#53 /var/www/snipeit/vendor/barryvdh/laravel-debugbar/src/Middleware/InjectDebugbar.php(65): Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#54 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(149): Barryvdh\Debugbar\Middleware\InjectDebugbar->handle(Object(Illuminate\Http\Request), Object(Closure))
#55 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#56 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/TransformsRequest.php(30): Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#57 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(149): Illuminate\Foundation\Http\Middleware\TransformsRequest->handle(Object(Illuminate\Http\Request), Object(Closure))
#58 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#59 /var/www/snipeit/app/Http/Middleware/CheckForDebug.php(25): Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#60 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(149): App\Http\Middleware\CheckForDebug->handle(Object(Illuminate\Http\Request), Object(Closure))
#61 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#62 /var/www/snipeit/app/Http/Middleware/CheckForSetup.php(27): Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#63 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(149): App\Http\Middleware\CheckForSetup->handle(Object(Illuminate\Http\Request), Object(Closure))
#64 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#65 /var/www/snipeit/vendor/fideloper/proxy/src/TrustProxies.php(57): Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#66 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(149): Fideloper\Proxy\TrustProxies->handle(Object(Illuminate\Http\Request), Object(Closure))
#67 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#68 /var/www/snipeit/app/Http/Middleware/NosniffGuard.php(17): Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#69 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(149): App\Http\Middleware\NosniffGuard->handle(Object(Illuminate\Http\Request), Object(Closure))
#70 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#71 /var/www/snipeit/app/Http/Middleware/ContentSecurityPolicyHeader.php(18): Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#72 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(149): App\Http\Middleware\ContentSecurityPolicyHeader->handle(Object(Illuminate\Http\Request), Object(Closure))
#73 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#74 /var/www/snipeit/app/Http/Middleware/ReferrerPolicyHeader.php(17): Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#75 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(149): App\Http\Middleware\ReferrerPolicyHeader->handle(Object(Illuminate\Http\Request), Object(Closure))
#76 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#77 /var/www/snipeit/app/Http/Middleware/XssProtectHeader.php(18): Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#78 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(149): App\Http\Middleware\XssProtectHeader->handle(Object(Illuminate\Http\Request), Object(Closure))
#79 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#80 /var/www/snipeit/app/Http/Middleware/FrameGuard.php(17): Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#81 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(149): App\Http\Middleware\FrameGuard->handle(Object(Illuminate\Http\Request), Object(Closure))
#82 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#83 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/View/Middleware/ShareErrorsFromSession.php(49): Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#84 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(149): Illuminate\View\Middleware\ShareErrorsFromSession->handle(Object(Illuminate\Http\Request), Object(Closure))
#85 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#86 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Session/Middleware/StartSession.php(63): Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#87 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(149): Illuminate\Session\Middleware\StartSession->handle(Object(Illuminate\Http\Request), Object(Closure))
#88 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#89 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/CheckForMaintenanceMode.php(46): Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#90 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(149): Illuminate\Foundation\Http\Middleware\CheckForMaintenanceMode->handle(Object(Illuminate\Http\Request), Object(Closure))
#91 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request))
#92 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(102): Illuminate\Routing\Pipeline->Illuminate\Routing\{closure}(Object(Illuminate\Http\Request))
#93 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(151): Illuminate\Pipeline\Pipeline->then(Object(Closure))
#94 /var/www/snipeit/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(116): Illuminate\Foundation\Http\Kernel->sendRequestThroughRouter(Object(Illuminate\Http\Request))
#95 /var/www/snipeit/public/index.php(58): Illuminate\Foundation\Http\Kernel->handle(Object(Illuminate\Http\Request))
#96 {main}