Following errors occur:

#0 [internal function]: Whoops\Run->handleError(2, 'file_put_conten...', '/home/n1els/dom...', 71, Array) #1 /home/n1els/domains/alcatpone.nl/public_html/concrete/vendor/illuminate/filesystem/Illuminate/Filesystem/Filesystem.php(71): file_put_contents('/home/n1els/dom...', 'put('/home/n1els/dom...', 'save('misc.access_ent...', 1413360769, 'install', 'concrete', NULL) #4 /home/n1els/domains/alcatpone.nl/public_html/concrete/src/Support/Facade/Facade.php(116): Concrete\Core\Config\Repository\Repository->save('concrete.misc.a...', 1413360769) #5 /home/n1els/domains/alcatpone.nl/public_html/concrete/src/Permission/Access/Entity/GroupEntity.php(51): Concrete\Core\Support\Facade\Facade::__callStatic('save', Array) #6 /home/n1els/domains/alcatpone.nl/public_html/concrete/src/Permission/Access/Entity/GroupEntity.php(51): Concrete\Core\Support\Facade\Config::save('concrete.misc.a...', 1413360769) #7 /home/n1els/domains/alcatpone.nl/public_html/concrete/src/Backup/ContentImporter.php(808): Concrete\Core\Permission\Access\Entity\GroupEntity::getOrCreate(Object(Concrete\Core\User\Group\Group)) #8 /home/n1els/domains/alcatpone.nl/public_html/concrete/src/Backup/ContentImporter.php(99): Concrete\Core\Backup\ContentImporter->importPermissions(Object(SimpleXMLElement)) #9 /home/n1els/domains/alcatpone.nl/public_html/concrete/src/Backup/ContentImporter.php(60): Concrete\Core\Backup\ContentImporter->doImport(Object(SimpleXMLElement)) #10 /home/n1els/domains/alcatpone.nl/public_html/concrete/src/Package/StartingPointPackage.php(297): Concrete\Core\Backup\ContentImporter->importContentFile('/home/n1els/dom...') #11 [internal function]: Concrete\Core\Package\StartingPointPackage->install_permissions() #12 /home/n1els/domains/alcatpone.nl/public_html/concrete/controllers/install.php(261): call_user_func(Array) #13 [internal function]: Concrete\Controller\Install->run_routine('elemental_full', 'install_permiss...') #14 /home/n1els/domains/alcatpone.nl/public_html/concrete/src/Controller/AbstractController.php(149): call_user_func_array(Array, Array) #15 /home/n1els/domains/alcatpone.nl/public_html/concrete/src/Routing/ControllerRouteCallback.php(25): Concrete\Core\Controller\AbstractController->runAction('run_routine', Array) #16 /home/n1els/domains/alcatpone.nl/public_html/concrete/src/Routing/Router.php(59): Concrete\Core\Routing\ControllerRouteCallback->execute(Object(Concrete\Core\Http\Request), Object(Concrete\Core\Routing\Route), Array) #17 /home/n1els/domains/alcatpone.nl/public_html/concrete/src/Support/Facade/Facade.php(116): Concrete\Core\Routing\Router->execute(Object(Concrete\Core\Routing\Route), Array) #18 /home/n1els/domains/alcatpone.nl/public_html/concrete/src/Application/Application.php(313): Concrete\Core\Support\Facade\Facade::__callStatic('execute', Array) #19 /home/n1els/domains/alcatpone.nl/public_html/concrete/src/Application/Application.php(313): Concrete\Core\Support\Facade\Route::execute(Object(Concrete\Core\Routing\Route), Array) #20 /home/n1els/domains/alcatpone.nl/public_html/concrete/bootstrap/start.php(179): Concrete\Core\Application\Application->dispatch(Object(Concrete\Core\Http\Request)) #21 /home/n1els/domains/alcatpone.nl/public_html/concrete/dispatcher.php(36): require('/home/n1els/dom...') #22 /home/n1els/domains/alcatpone.nl/public_html/index.php(2): require('/home/n1els/dom...') #23 {main}