Erweiterung installieren

Hallo zusammen
Ich wollte unte Contaaoo 3.5.40 eine Erweiterung installieren und bekomme folgende Fehlermeldung.
Was bedeutet das genau ?

Vielen Dank und Grüse
Michi

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#0 [internal function]: __error(2, '"continue" targ...', 'phar:///home/ht...', 286, Array)
#1 system/modules/!composer/src/Util/ErrorHandler.php(50): call_user_func_array('__error', Array)
#2 vendor/composer/ClassLoader.php(444): ContaoCommunityAlliance\Contao\Composer\Util\Error Handler::handleError(2, '"continue" targ...', 'phar:///home/ht...', 286, Array)
#3 vendor/composer/ClassLoader.php(444): include()
#4 vendor/composer/ClassLoader.php(322): Composer\Autoload\includeFile('phar:///home/ht...')
#5 [internal function]: Composer\Autoload\ClassLoader->loadClass('Composer\\Depend...')
#6 phar://composer/composer.phar/src/Composer/DependencyResolver/Solver.php(75): spl_autoload_call('Composer\\Depend...')
#7 phar://composer/composer.phar/src/Composer/Installer.php(459): Composer\DependencyResolver\Solver->__construct(Object(Composer\DependencyResolver\De faultPolicy), Object(Composer\DependencyResolver\Pool), Object(Composer\Repository\CompositeRepository), Object(Composer\IO\BufferIO))
#8 phar://composer/composer.phar/src/Composer/Installer.php(216): Composer\Installer->doInstall(Object(Composer\Repository\InstalledFil esystemRepository), Object(Composer\Repository\CompositeRepository), Object(Composer\Repository\PlatformRepository), Array)
#9 system/modules/!composer/src/Controller/UpdatePackagesController.php(143): Composer\Installer->run()
#10 system/modules/!composer/src/Controller/UpdatePackagesController.php(51): ContaoCommunityAlliance\Contao\Composer\Controller \UpdatePackagesController->runInline(Array, false)
#11 system/modules/!composer/src/ClientBackend.php(213): ContaoCommunityAlliance\Contao\Composer\Controller \UpdatePackagesController->handle(Object(Contao\Input))
#12 system/modules/core/classes/Backend.php(423): ContaoCommunityAlliance\Contao\Composer\ClientBack end->generate()
#13 system/modules/core/controllers/BackendMain.php(131): Contao\Backend->getBackendModule('composer')
#14 contao/main.php(20): Contao\BackendMain->run()
#15 {main}

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