Fatal error when trying to send test email

Knarfou

The issue

After a successful installation, I have a problem setting mail right. I'm using php mail option, provided a right email, and when I click on Send for the mail test, I have this error:

Fatal error: Uncaught Laminas\HttpHandlerRunner\Exception\EmitterException: Output has been emitted previously; cannot emit response in /home/clients/15f79c4857cd4aa6c51123cd609b022a/sites/forum/vendor/laminas/laminas-httphandlerrunner/src/Exception/EmitterException.php:21 Stack trace: #0 /home/clients/15f79c4857cd4aa6c51123cd609b022a/sites/forum/vendor/laminas/laminas-httphandlerrunner/src/Emitter/SapiEmitterTrait.php(42): Laminas\HttpHandlerRunner\Exception\EmitterException::forOutputSent() #1 /home/clients/15f79c4857cd4aa6c51123cd609b022a/sites/forum/vendor/laminas/laminas-httphandlerrunner/src/Emitter/SapiEmitter.php(22): Laminas\HttpHandlerRunner\Emitter\SapiEmitter->assertNoPreviousOutput() #2 /home/clients/15f79c4857cd4aa6c51123cd609b022a/sites/forum/vendor/laminas/laminas-httphandlerrunner/src/RequestHandlerRunner.php(75): Laminas\HttpHandlerRunner\Emitter\SapiEmitter->emit(Object(Flarum\Api\JsonApiResponse)) #3 /home/clients/15f79c4857cd4aa6c51123cd609b022a/sites/forum/vendor/flarum/core/src/Http/Server.php(45): Laminas\HttpHandlerRunner\RequestHandlerRunner->run() #4 /home/clients/15f79c4857cd4aa6c51123cd609b022a/sites/forum/index.php(26): Flarum\Http\Server->listen() #5 {main} thrown in /home/clients/15f79c4857cd4aa6c51123cd609b022a/sites/forum/vendor/laminas/laminas-httphandlerrunner/src/Exception/EmitterException.php on line 21

So I can't go any further, not sure if it sends anything.

Flarum information

Flarum core: 1.8.13
PHP version: CLI: 8.3.29, Web: 8.2.30 (MISMATCH - versions should match!)
PHP memory limit: CLI: 640M, Web: unable to detect
MySQL version: 10.11.15-MariaDB-deb11-log
Loaded extensions: Core, date, libxml, openssl, pcre, sqlite3, zlib, bcmath, bz2, calendar, ctype, curl, dom, hash, fileinfo, filter, ftp, gd, gettext, gmp, json, iconv, SPL, intl, session, ldap, mbstring, standard, mysqlnd, pcntl, exif, mysqli, PDO, pdo_mysql, pdo_sqlite, pgsql, Phar, posix, random, readline, Reflection, imap, SimpleXML, soap, sockets, sodium, tidy, tokenizer, xml, xmlreader, xmlwriter, xsl, cgi-fcgi, excimer, imagick, mailparse, mongodb, OAuth, raphf, ssh2, timezonedb, uploadprogress, yaz, zip, http
+--------------------------+---------+--------+-------+
| Flarum Extensions        |         |        |       |
+--------------------------+---------+--------+-------+
| ID                       | Version | Commit | Notes |
+--------------------------+---------+--------+-------+
| flarum-flags             | v1.8.2  |        |       |
| flarum-approval          | v1.8.2  |        |       |
| flarum-tags              | v1.8.6  |        |       |
| flarum-suspend           | v1.8.5  |        |       |
| flarum-subscriptions     | v1.8.1  |        |       |
| flarum-sticky            | v1.8.2  |        |       |
| flarum-statistics        | v1.8.1  |        |       |
| flarum-mentions          | v1.8.5  |        |       |
| flarum-markdown          | v1.8.1  |        |       |
| flarum-lock              | v1.8.2  |        |       |
| flarum-likes             | v1.8.1  |        |       |
| flarum-lang-french       | v4.29.1 |        |       |
| flarum-lang-english      | v1.8.0  |        |       |
| flarum-extension-manager | v1.0.7  |        |       |
| flarum-emoji             | v1.8.1  |        |       |
| flarum-bbcode            | v1.8.0  |        |       |
+--------------------------+---------+--------+-------+
Base URL: xxxx
Installation path: xxxx
Queue driver: sync
Session driver: file
Mail driver: mail
Debug mode: ON

Don't forget to turn off debug mode! It should never be turned on in a production system.

Knarfou

How can one determine the web PHP version versus the CLI PHP version? Should I refer to the hosting?
I mean I guess it might be the source of my problem, btw if anyone has a clue, I’m all ears.

GreXXL

Knarfou if you cannot set it yourself via a configuration panel then you need to get in touch with your hosting provider. It's essential both versions match for Flarum.

Knarfou

GreXXL Thanks, I'll do it right now.

Knarfou

So I modified PHP version on one side to have the same on CLI & web, but I still have the fatal error indicated above.
I tested the installation on another hosting provider with no problem at all, including test email. I guess it's the host configuration. Still searching.

KBExit

Knarfou if you make any changes to anything, you need to run composer update for everything to basically reset and be settled. Your currently stack is built for your previous foundation, which has been altered now.

Knarfou

KBExit Just did: nothing to upgrade.

KBExit

What is your error message? Check your logs.

GreXXL

If you change the php version you need to runcomposer update --prefer-dist --no-plugins --no-dev -a --with-all-dependencies - if you do not update the dependencies you won't see any effect after changing the PHP version.

Knarfou

Thanks, I'm new to Flarum (& composer) and even though I checked the docs, I have certainly missed things.

KBExit

Knarfou that is absolutely fine! We all start somewhere and learning is heavily encouraged. Don't hesitate to ask for support 🙂

Knarfou

PHP version: CLI: 8.2.30, Web: 8.2.30
PHP memory limit: CLI: 640M, Web: unable to detect
MySQL version: 10.11.15-MariaDB-deb11-log
Loaded extensions: Core, date, libxml, openssl, pcre, sqlite3, zlib, bcmath, bz2, calendar, ctype, curl, dom, hash, fileinfo, filter, ftp, gd, gettext, gmp, json, iconv, SPL, intl, session, ldap, mbstring, standard, mysqlnd, pcntl, exif, mysqli, PDO, pdo_mysql, pdo_sqlite, pgsql, Phar, posix, random, readline, Reflection, imap, SimpleXML, soap, sockets, sodium, tidy, tokenizer, xml, xmlreader, xmlwriter, xsl, cgi-fcgi, excimer, imagick, mailparse, mcrypt, mongodb, OAuth, raphf, ssh2, timezonedb, uploadprogress, yaz, zip, http
+--------------------------+---------+--------+-------+
| Flarum Extensions        |         |        |       |
+--------------------------+---------+--------+-------+
| ID                       | Version | Commit | Notes |
+--------------------------+---------+--------+-------+
| flarum-flags             | v1.8.2  |        |       |
| flarum-approval          | v1.8.2  |        |       |
| flarum-tags              | v1.8.6  |        |       |
| fof-links                | 1.4.0   |        |       |
| flarum-suspend           | v1.8.5  |        |       |
| flarum-subscriptions     | v1.8.1  |        |       |
| flarum-sticky            | v1.8.2  |        |       |
| flarum-statistics        | v1.8.1  |        |       |
| flarum-nicknames         | v1.8.2  |        |       |
| flarum-mentions          | v1.8.5  |        |       |
| flarum-markdown          | v1.8.1  |        |       |
| flarum-lock              | v1.8.2  |        |       |
| flarum-likes             | v1.8.1  |        |       |
| flarum-lang-french       | v4.29.1 |        |       |
| flarum-lang-english      | v1.8.0  |        |       |
| flarum-extension-manager | v1.0.7  |        |       |
| flarum-emoji             | v1.8.1  |        |       |
| flarum-bbcode            | v1.8.0  |        |       |
+--------------------------+---------+--------+-------+
Base URL: https://forum.ifsenplus.fr
Installation path: /home/clients/15f79c4857cd4aa6c51123cd609b022a/sites/forum.ifsenplus.fr
Queue driver: sync
Session driver: file
Mail driver: mail
Debug mode: ON

Don't forget to turn off debug mode! It should never be turned on in a production system.

PHP version is now 8.2.x for both. So I ran composer update etc. to update dependencies. I still have the same fatal error when trying to send a test email.

(There was a problem on the hosting preventing me to use SSH, just have access now)

KBExit

Knarfou I just wanted to make sure you're 100% set now?

GreXXL

Knarfou best you share the whole error message you receive in your storage/logs and you mail configuration so we can investigate what your issue is.

Knarfou

GreXXL

flarum.ERROR: Swift_TransportException: Expected response code 220 but got an empty response in .../vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/AbstractSmtpTransport.php:447
Stack trace:
#0 .../vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/AbstractSmtpTransport.php(360): Swift_Transport_AbstractSmtpTransport->assertResponseCode('', Array)
#1 .../vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/AbstractSmtpTransport.php(147): Swift_Transport_AbstractSmtpTransport->readGreeting()
#2 .../vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/SendmailTransport.php(50): Swift_Transport_AbstractSmtpTransport->start()
#3 .../vendor/swiftmailer/swiftmailer/lib/classes/Swift/Mailer.php(65): Swift_Transport_SendmailTransport->start()
#4 .../vendor/illuminate/mail/Mailer.php(521): Swift_Mailer->send(Object(Swift_Message), Array)
#5 .../vendor/illuminate/mail/Mailer.php(288): Illuminate\Mail\Mailer->sendSwiftMessage(Object(Swift_Message))
#6 .../vendor/illuminate/mail/Mailer.php(212): Illuminate\Mail\Mailer->send(NULL, Array, Object(Closure))
#7 .../vendor/flarum/core/src/Api/Controller/SendTestMailController.php(40): Illuminate\Mail\Mailer->raw('Bonjour Franck ...', Object(Closure))
#8 .../vendor/flarum/core/src/Http/RouteHandlerFactory.php(41): Flarum\Api\Controller\SendTestMailController->handle(Object(Laminas\Diactoros\ServerRequest))
#9 .../vendor/flarum/core/src/Http/Middleware/ExecuteRoute.php(27): Flarum\Http\RouteHandlerFactory->Flarum\Http\{closure}(Object(Laminas\Diactoros\ServerRequest), Array)
#10 .../vendor/laminas/laminas-stratigility/src/Next.php(49): Flarum\Http\Middleware\ExecuteRoute->process(Object(Laminas\Diactoros\ServerRequest), Object(Closure))
#11 .../vendor/flarum/core/src/Api/Middleware/ThrottleApi.php(33): Laminas\Stratigility\Next->handle(Object(Laminas\Diactoros\ServerRequest))
#12 .../vendor/laminas/laminas-stratigility/src/Next.php(49): Flarum\Api\Middleware\ThrottleApi->process(Object(Laminas\Diactoros\ServerRequest), Object(Laminas\Stratigility\Next))
#13 .../vendor/flarum/core/src/Http/Middleware/CheckCsrfToken.php(44): Laminas\Stratigility\Next->handle(Object(Laminas\Diactoros\ServerRequest))
#14 .../vendor/laminas/laminas-stratigility/src/Next.php(49): Flarum\Http\Middleware\CheckCsrfToken->process(Object(Laminas\Diactoros\ServerRequest), Object(Laminas\Stratigility\Next))
#15 .../vendor/flarum/core/src/Http/Middleware/ResolveRoute.php(69): Laminas\Stratigility\Next->handle(Object(Laminas\Diactoros\ServerRequest))
#16 .../vendor/laminas/laminas-stratigility/src/Next.php(49): Flarum\Http\Middleware\ResolveRoute->process(Object(Laminas\Diactoros\ServerRequest), Object(Laminas\Stratigility\Next))
#17 .../vendor/flarum/core/src/Http/Middleware/SetLocale.php(51): Laminas\Stratigility\Next->handle(Object(Laminas\Diactoros\ServerRequest))
#18 .../vendor/laminas/laminas-stratigility/src/Next.php(49): Flarum\Http\Middleware\SetLocale->process(Object(Laminas\Diactoros\ServerRequest), Object(Laminas\Stratigility\Next))
#19 .../vendor/flarum/core/src/Http/Middleware/AuthenticateWithHeader.php(58): Laminas\Stratigility\Next->handle(Object(Laminas\Diactoros\ServerRequest))
#20 .../vendor/laminas/laminas-stratigility/src/Next.php(49): Flarum\Http\Middleware\AuthenticateWithHeader->process(Object(Laminas\Diactoros\ServerRequest), Object(Laminas\Stratigility\Next))
#21 .../vendor/flarum/core/src/Http/Middleware/AuthenticateWithSession.php(31): Laminas\Stratigility\Next->handle(Object(Laminas\Diactoros\ServerRequest))
#22 .../vendor/laminas/laminas-stratigility/src/Next.php(49): Flarum\Http\Middleware\AuthenticateWithSession->process(Object(Laminas\Diactoros\ServerRequest), Object(Laminas\Stratigility\Next))
#23 .../vendor/flarum/core/src/Http/Middleware/RememberFromCookie.php(63): Laminas\Stratigility\Next->handle(Object(Laminas\Diactoros\ServerRequest))
#24 .../vendor/laminas/laminas-stratigility/src/Next.php(49): Flarum\Http\Middleware\RememberFromCookie->process(Object(Laminas\Diactoros\ServerRequest), Object(Laminas\Stratigility\Next))
#25 .../vendor/flarum/core/src/Http/Middleware/StartSession.php(61): Laminas\Stratigility\Next->handle(Object(Laminas\Diactoros\ServerRequest))
#26 .../vendor/laminas/laminas-stratigility/src/Next.php(49): Flarum\Http\Middleware\StartSession->process(Object(Laminas\Diactoros\ServerRequest), Object(Laminas\Stratigility\Next))
#27 .../vendor/flarum/core/src/Api/Middleware/FakeHttpMethods.php(29): Laminas\Stratigility\Next->handle(Object(Laminas\Diactoros\ServerRequest))
#28 .../vendor/laminas/laminas-stratigility/src/Next.php(49): Flarum\Api\Middleware\FakeHttpMethods->process(Object(Laminas\Diactoros\ServerRequest), Object(Laminas\Stratigility\Next))
#29 .../vendor/flarum/core/src/Http/Middleware/ParseJsonBody.php(28): Laminas\Stratigility\Next->handle(Object(Laminas\Diactoros\ServerRequest))
#30 .../vendor/laminas/laminas-stratigility/src/Next.php(49): Flarum\Http\Middleware\ParseJsonBody->process(Object(Laminas\Diactoros\ServerRequest), Object(Laminas\Stratigility\Next))
#31 .../vendor/flarum/core/src/Http/Middleware/HandleErrors.php(57): Laminas\Stratigility\Next->handle(Object(Laminas\Diactoros\ServerRequest))
#32 .../vendor/laminas/laminas-stratigility/src/Next.php(49): Flarum\Http\Middleware\HandleErrors->process(Object(Laminas\Diactoros\ServerRequest), Object(Laminas\Stratigility\Next))
#33 .../vendor/flarum/core/src/Http/Middleware/InjectActorReference.php(25): Laminas\Stratigility\Next->handle(Object(Laminas\Diactoros\ServerRequest))
#34 .../vendor/laminas/laminas-stratigility/src/Next.php(49): Flarum\Http\Middleware\InjectActorReference->process(Object(Laminas\Diactoros\ServerRequest), Object(Laminas\Stratigility\Next))
#35 .../vendor/laminas/laminas-stratigility/src/MiddlewarePipe.php(81): Laminas\Stratigility\Next->handle(Object(Laminas\Diactoros\ServerRequest))
#36 .../vendor/middlewares/request-handler/src/RequestHandler.php(84): Laminas\Stratigility\MiddlewarePipe->process(Object(Laminas\Diactoros\ServerRequest), Object(Laminas\Stratigility\Next))
#37 .../vendor/laminas/laminas-stratigility/src/Next.php(49): Middlewares\RequestHandler->process(Object(Laminas\Diactoros\ServerRequest), Object(Laminas\Stratigility\Next))
#38 .../vendor/middlewares/base-path-router/src/BasePathRouter.php(97): Laminas\Stratigility\Next->handle(Object(Laminas\Diactoros\ServerRequest))
#39 .../vendor/laminas/laminas-stratigility/src/Next.php(49): Middlewares\BasePathRouter->process(Object(Laminas\Diactoros\ServerRequest), Object(Laminas\Stratigility\Next))
#40 .../vendor/laminas/laminas-stratigility/src/Middleware/OriginalMessages.php(36): Laminas\Stratigility\Next->handle(Object(Laminas\Diactoros\ServerRequest))
#41 .../vendor/laminas/laminas-stratigility/src/Next.php(49): Laminas\Stratigility\Middleware\OriginalMessages->process(Object(Laminas\Diactoros\ServerRequest), Object(Laminas\Stratigility\Next))
#42 .../vendor/middlewares/base-path/src/BasePath.php(73): Laminas\Stratigility\Next->handle(Object(Laminas\Diactoros\ServerRequest))
#43 .../vendor/laminas/laminas-stratigility/src/Next.php(49): Middlewares\BasePath->process(Object(Laminas\Diactoros\ServerRequest), Object(Laminas\Stratigility\Next))
#44 .../vendor/flarum/core/src/Http/Middleware/ProcessIp.php(24): Laminas\Stratigility\Next->handle(Object(Laminas\Diactoros\ServerRequest))
#45 .../vendor/laminas/laminas-stratigility/src/Next.php(49): Flarum\Http\Middleware\ProcessIp->process(Object(Laminas\Diactoros\ServerRequest), Object(Laminas\Stratigility\Next))
#46 .../vendor/laminas/laminas-stratigility/src/MiddlewarePipe.php(81): Laminas\Stratigility\Next->handle(Object(Laminas\Diactoros\ServerRequest))
#47 .../vendor/laminas/laminas-stratigility/src/MiddlewarePipe.php(70): Laminas\Stratigility\MiddlewarePipe->process(Object(Laminas\Diactoros\ServerRequest), Object(Laminas\Stratigility\EmptyPipelineHandler))
#48 .../vendor/laminas/laminas-httphandlerrunner/src/RequestHandlerRunner.php(73): Laminas\Stratigility\MiddlewarePipe->handle(Object(Laminas\Diactoros\ServerRequest))
#49 .../vendor/flarum/core/src/Http/Server.php(45): Laminas\HttpHandlerRunner\RequestHandlerRunner->run()
#50 .../index.php(26): Flarum\Http\Server->listen()
#51 {main}

Mail config: 'mail', with existing address from the domain of the site as sender.

I installed Flarum flawlessly on another host, so I guess it's a compatibility problem with this one.

KBExit

Knarfou your error says your server doesn't have the email driver configured. You need to either setup your own postfix server or get a third party solution like Mailgun. Note, if you go through your own postfix, your emails are going to hit spam every time. Email providers have gotten crazy strict lately, especially Outlook. Bet bet is Mailgun, brevo, AWS SES.

Knarfou

KBExit Email driver: php mail or something else?

KBExit

Knarfou The 'PHP mail' and 'Sendmail' drivers both rely on your local server having mail software installed and configured correctly. Since you received that error, your local server isn't set up to handle email, so 'PHP mail' will likely fail.

Knarfou

KBExit OK Thanks.
Found this forum post (in french) about the problem on that host: https://www.flarum.fr/support/d/244-problemes-demail-avec-php-8182-chez-infomaniak
I might switch to smtp then.

KBExit

Knarfou you want to also make sure they aren't blocking email ports on that host.