Grav Error - Unsupported sendmail command flags "C:/laragon/bin/mailpit/1.22.3/mailpit.exe sendmail"

[khamanpl]

I tried to open the GRAV install at Lazarus. The same files work on real server, but at Lazarus I get error:

Server Error Sorry, something went terribly wrong! 0 - Unsupported sendmail command flags "C:/laragon/bin/mailpit/1.22.3/mailpit.exe sendmail"; must be one of "-bs" or "-t" but can include additional flags. For further details please review your logs/ folder, or enable displaying of errors in your system configuration.

logs:
[2026-02-15 12:58:28] grav.CRITICAL: Unsupported sendmail command flags "C:/laragon/bin/mailpit/1.22.3/mailpit.exe sendmail"; must be one of "-bs" or "-t" but can include additional flags. - Trace: #0 C:\laragon\www\user\plugins\email\vendor\symfony\mailer\Transport\NativeTransportFactory.php(33): Symfony\Component\Mailer\Transport\SendmailTransport->__construct('C:/laragon/bin/...', NULL, NULL) #1 C:\laragon\www\user\plugins\email\vendor\symfony\mailer\Transport.php(172): Symfony\Component\Mailer\Transport\NativeTransportFactory->create(Object(Symfony\Component\Mailer\Transport\Dsn)) #2 C:\laragon\www\user\plugins\email\vendor\symfony\mailer\Transport.php(161): Symfony\Component\Mailer\Transport->fromDsnObject(Object(Symfony\Component\Mailer\Transport\Dsn)) #3 C:\laragon\www\user\plugins\email\vendor\symfony\mailer\Transport.php(113): Symfony\Component\Mailer\Transport->parseDsn('native://defaul...') #4 C:\laragon\www\user\plugins\email\vendor\symfony\mailer\Transport.php(74): Symfony\Component\Mailer\Transport->fromString('native://defaul...') #5 C:\laragon\www\user\plugins\email\classes\Email.php(449): Symfony\Component\Mailer\Transport::fromDsn('native://defaul...') #6 C:\laragon\www\user\plugins\email\classes\Email.php(323): Grav\Plugin\Email\Email::getTransport() #7 C:\laragon\www\user\plugins\email\classes\Email.php(39): Grav\Plugin\Email\Email->initMailer() #8 C:\laragon\www\user\plugins\email\email.php(48): Grav\Plugin\Email\Email->__construct() #9 C:\laragon\www\vendor\symfony\event-dispatcher\EventDispatcher.php(264): Grav\Plugin\EmailPlugin->onPluginsInitialized(Object(RocketTheme\Toolbox\Event\Event), 'onPluginsInitia...', Object(Symfony\Component\EventDispatcher\EventDispatcher)) #10 C:\laragon\www\vendor\symfony\event-dispatcher\EventDispatcher.php(239): Symfony\Component\EventDispatcher\EventDispatcher->doDispatch(Array, 'onPluginsInitia...', Object(RocketTheme\Toolbox\Event\Event)) #11 C:\laragon\www\vendor\symfony\event-dispatcher\EventDispatcher.php(73): Symfony\Component\EventDispatcher\EventDispatcher->callListeners(Array, 'onPluginsInitia...', Object(RocketTheme\Toolbox\Event\Event)) #12 C:\laragon\www\system\src\Grav\Common\Grav.php(597): Symfony\Component\EventDispatcher\EventDispatcher->dispatch(Object(RocketTheme\Toolbox\Event\Event), 'onPluginsInitia...') #13 C:\laragon\www\system\src\Grav\Common\Processors\PluginsProcessor.php(36): Grav\Common\Grav->fireEvent('onPluginsInitia...') #14 C:\laragon\www\system\src\Grav\Framework\RequestHandler\Traits\RequestHandlerTrait.php(50): Grav\Common\Processors\PluginsProcessor->process(Object(Nyholm\Psr7\ServerRequest), Object(Grav\Framework\RequestHandler\RequestHandler)) #15 C:\laragon\www\system\src\Grav\Framework\RequestHandler\Traits\RequestHandlerTrait.php(62): Grav\Framework\RequestHandler\RequestHandler->handle(Object(Nyholm\Psr7\ServerRequest)) #16 C:\laragon\www\system\src\Grav\Common\Processors\InitializeProcessor.php(130): Grav\Framework\RequestHandler\RequestHandler->handle(Object(Nyholm\Psr7\ServerRequest)) #17 C:\laragon\www\system\src\Grav\Common\Debugger.php(550): Grav\Common\Processors\InitializeProcessor::Grav\Common\Processors\{closure}() #18 C:\laragon\www\system\src\Grav\Common\Processors\InitializeProcessor.php(129): Grav\Common\Debugger->profile(Object(Closure)) #19 C:\laragon\www\system\src\Grav\Framework\RequestHandler\Traits\RequestHandlerTrait.php(50): Grav\Common\Processors\InitializeProcessor->process(Object(Nyholm\Psr7\ServerRequest), Object(Grav\Framework\RequestHandler\RequestHandler)) #20 C:\laragon\www\system\src\Grav\Framework\RequestHandler\Traits\RequestHandlerTrait.php(62): Grav\Framework\RequestHandler\RequestHandler->handle(Object(Nyholm\Psr7\ServerRequest)) #21 C:\laragon\www\system\src\Grav\Framework\RequestHandler\Middlewares\MultipartRequestSupport.php(40): Grav\Framework\RequestHandler\RequestHandler->handle(Object(Nyholm\Psr7\ServerRequest)) #22 C:\laragon\www\system\src\Grav\Framework\RequestHandler\Traits\RequestHandlerTrait.php(50): Grav\Framework\RequestHandler\Middlewares\MultipartRequestSupport->process(Object(Nyholm\Psr7\ServerRequest), Object(Grav\Framework\RequestHandler\RequestHandler)) #23 C:\laragon\www\system\src\Grav\Framework\RequestHandler\Traits\RequestHandlerTrait.php(62): Grav\Framework\RequestHandler\RequestHandler->handle(Object(Nyholm\Psr7\ServerRequest)) #24 C:\laragon\www\system\src\Grav\Common\Grav.php(312): Grav\Framework\RequestHandler\RequestHandler->handle(Object(Nyholm\Psr7\ServerRequest)) #25 C:\laragon\www\index.php(47): Grav\Common\Grav->process() #26 {main} [] []

[leokhoa]

@khamanpl : Can you please provide step by step to produce the issue?