"Enter" key does not work after one message is sent.

Not sure if its relavent with this but after I updated to dev version I get WSOD on thread view page with the below message in logs;

ParseError: syntax error, unexpected ')', expecting variable (T_VARIABLE) in Composer\Autoload\includeFile() (line 144 of /home/keratai1/public_html/xxxxx.com/web/modules/contrib/private_message/src/Form/PrivateMessageForm.php) #0 /home/keratai1/public_html/xxxxx.com/vendor/composer/ClassLoader.php(428): Composer\Autoload\includeFile('/home/keratai1/...')
#1 [internal function]: Composer\Autoload\ClassLoader->loadClass('Drupal\\private_...')
#2 [internal function]: spl_autoload_call('Drupal\\private_...')
#3 /home/keratai1/public_html/xxxxx.com/web/core/lib/Drupal/Core/Entity/EntityType.php(482): class_exists('Drupal\\private_...')
#4 /home/keratai1/public_html/xxxxx.com/web/core/lib/Drupal/Core/Entity/EntityType.php(455): Drupal\Core\Entity\EntityType->hasHandlerClass('form', 'add')
#5 /home/keratai1/public_html/xxxxx.com/web/core/lib/Drupal/Core/Entity/EntityType.php(515): Drupal\Core\Entity\EntityType->getHandlerClass('form', 'add')
#6 /home/keratai1/public_html/xxxxx.com/web/core/lib/Drupal/Core/Entity/EntityTypeManager.php(206): Drupal\Core\Entity\EntityType->getFormClass('add')
#7 /home/keratai1/public_html/xxxxx.com/web/modules/contrib/private_message/private_message.module(160): Drupal\Core\Entity\EntityTypeManager->getFormObject('private_message', 'add')
#8 [internal function]: private_message_private_message_thread_view(Array, Object(Drupal\private_message\Entity\PrivateMessageThread), Object(Drupal\Core\Entity\Entity\EntityViewDisplay), 'full')
#9 /home/keratai1/public_html/xxxxx.com/web/core/lib/Drupal/Core/Extension/ModuleHandler.php(426): call_user_func_array(Object(Closure), Array)
#10 /home/keratai1/public_html/xxxxx.com/web/core/lib/Drupal/Core/Extension/ModuleHandler.php(405): Drupal\Core\Extension\ModuleHandler->Drupal\Core\Extension\{closure}(Object(Closure), 'private_message')
#11 /home/keratai1/public_html/xxxxx.com/web/core/lib/Drupal/Core/Extension/ModuleHandler.php(433): Drupal\Core\Extension\ModuleHandler->invokeAllWith('private_message...', Object(Closure))
#12 /home/keratai1/public_html/xxxxx.com/web/core/lib/Drupal/Core/Entity/EntityViewBuilder.php(288): Drupal\Core\Extension\ModuleHandler->invokeAll('private_message...', Array)
#13 /home/keratai1/public_html/xxxxx.com/web/core/lib/Drupal/Core/Entity/EntityViewBuilder.php(239): Drupal\Core\Entity\EntityViewBuilder->buildMultiple(Array)
#14 [internal function]: Drupal\Core\Entity\EntityViewBuilder->build(Array)
#15 /home/keratai1/public_html/xxxxx.com/web/core/lib/Drupal/Core/Security/DoTrustedCallbackTrait.php(101): call_user_func_array(Array, Array)
#16 /home/keratai1/public_html/xxxxx.com/web/core/lib/Drupal/Core/Render/Renderer.php(788): Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_ren...', 'exception', 'Drupal\\Core\\Ren...')
#17 /home/keratai1/public_html/xxxxx.com/web/core/lib/Drupal/Core/Render/Renderer.php(374): Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array)
#18 /home/keratai1/public_html/xxxxx.com/web/core/lib/Drupal/Core/Render/Renderer.php(204): Drupal\Core\Render\Renderer->doRender(Array, false)
#19 /home/keratai1/public_html/xxxxx.com/web/core/lib/Drupal/Core/Render/MainContent/HtmlRenderer.php(242): Drupal\Core\Render\Renderer->render(Array, false)
#20 /home/keratai1/public_html/xxxxx.com/web/core/lib/Drupal/Core/Render/Renderer.php(580): Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}()
#21 /home/keratai1/public_html/xxxxx.com/web/core/lib/Drupal/Core/Render/MainContent/HtmlRenderer.php(243): Drupal\Core\Render\Renderer->executeInRenderContext(Object(Drupal\Core\Render\RenderContext), Object(Closure))
#22 /home/keratai1/public_html/xxxxx.com/web/core/lib/Drupal/Core/Render/MainContent/HtmlRenderer.php(132): Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object(Symfony\Component\HttpFoundation\Request), Object(Drupal\Core\Routing\CurrentRouteMatch))
#23 /home/keratai1/public_html/xxxxx.com/web/core/lib/Drupal/Core/EventSubscriber/MainContentViewSubscriber.php(90): Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object(Symfony\Component\HttpFoundation\Request), Object(Drupal\Core\Routing\CurrentRouteMatch))
#24 [internal function]: Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object(Symfony\Component\HttpKernel\Event\ViewEvent), 'kernel.view', Object(Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher))
#25 /home/keratai1/public_html/xxxxx.com/web/core/lib/Drupal/Component/EventDispatcher/ContainerAwareEventDispatcher.php(142): call_user_func(Array, Object(Symfony\Component\HttpKernel\Event\ViewEvent), 'kernel.view', Object(Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher))
#26 /home/keratai1/public_html/xxxxx.com/vendor/symfony/http-kernel/HttpKernel.php(174): Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object(Symfony\Component\HttpKernel\Event\ViewEvent), 'kernel.view')
#27 /home/keratai1/public_html/xxxxx.com/vendor/symfony/http-kernel/HttpKernel.php(81): Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object(Symfony\Component\HttpFoundation\Request), 1)
#28 /home/keratai1/public_html/xxxxx.com/web/core/lib/Drupal/Core/StackMiddleware/Session.php(58): Symfony\Component\HttpKernel\HttpKernel->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#29 /home/keratai1/public_html/xxxxx.com/web/core/lib/Drupal/Core/StackMiddleware/KernelPreHandle.php(48): Drupal\Core\StackMiddleware\Session->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#30 /home/keratai1/public_html/xxxxx.com/web/core/modules/page_cache/src/StackMiddleware/PageCache.php(106): Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#31 /home/keratai1/public_html/xxxxx.com/web/core/modules/page_cache/src/StackMiddleware/PageCache.php(85): Drupal\page_cache\StackMiddleware\PageCache->pass(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#32 /home/keratai1/public_html/xxxxx.com/web/core/lib/Drupal/Core/StackMiddleware/ReverseProxyMiddleware.php(48): Drupal\page_cache\StackMiddleware\PageCache->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#33 /home/keratai1/public_html/xxxxx.com/web/core/lib/Drupal/Core/StackMiddleware/NegotiationMiddleware.php(51): Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#34 /home/keratai1/public_html/xxxxx.com/vendor/stack/builder/src/Stack/StackedHttpKernel.php(23): Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#35 /home/keratai1/public_html/xxxxx.com/web/core/lib/Drupal/Core/DrupalKernel.php(713): Stack\StackedHttpKernel->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#36 /home/keratai1/public_html/xxxxx.com/web/index.php(19): Drupal\Core\DrupalKernel->handle(Object(Symfony\Component\HttpFoundation\Request))
#37 {main}.

@RgnYLDZ please see 🐛 expecting variable (T_VARIABLE) in private_message/src/Form/PrivateMessageForm.php for PHP < 8 Fixed

However I strongly recommed to switch to php8+.
PHP7 has reached its end of the life already.

Automatically closed - issue fixed for 2 weeks with no activity.

I believe this issue has re-surfaced between beta2 and stable. Since the stable changed this function again for d10 compatibility.