WSOD when installing already downloaded modules without active public internet connection

Problem/Motivation

Installing a locally downloaded module with automatic_updates installed and no active public internet connection throws a RuntimeException and WSOD.

Steps to reproduce

Install Drupal CMS

Add the following to settings.php (to simulate a network failure, or proxy failure).

$settings['http_client_config']['proxy']['http'] = 'http://127.0.0.1:63000';
$settings['http_client_config']['proxy']['https'] = 'http://127.0.0.1:63000';

Attempt to install a module that is already downloaded yet not installed, such as the Drupal Core Help Module.

Observe WSOD.

The website encountered an unexpected error. Try again later.

RuntimeException: The project 'drupal' can not be updated because its status is not-fetched in Drupal\package_manager\ProjectInfo->getInstallableReleases() (line 97 of modules/contrib/automatic_updates/package_manager/src/ProjectInfo.php).

Drupal\automatic_updates\Validator\VersionPolicyValidator->getAvailableReleases() (Line: 115)
Drupal\automatic_updates\Validator\VersionPolicyValidator->validateVersion() (Line: 181)
Drupal\automatic_updates\Validator\VersionPolicyValidator->checkVersion() (Line: 246)
Symfony\Component\EventDispatcher\EventDispatcher::Symfony\Component\EventDispatcher\{closure}() (Line: 206)
Symfony\Component\EventDispatcher\EventDispatcher->callListeners() (Line: 56)
Symfony\Component\EventDispatcher\EventDispatcher->dispatch() (Line: 50)
Drupal\automatic_updates\Validation\StatusChecker->runStatusCheck() (Line: 62)
Drupal\automatic_updates\Validation\StatusChecker->run() (Line: 194)
automatic_updates_modules_installed()
call_user_func_array() (Line: 355)
Drupal\Core\Extension\ModuleHandler->Drupal\Core\Extension\{closure}() (Line: 307)
Drupal\Core\Extension\ModuleHandler->invokeAllWith() (Line: 354)
Drupal\Core\Extension\ModuleHandler->invokeAll() (Line: 725)
Drupal\Core\Extension\ModuleInstaller->invokeAll() (Line: 392)
Drupal\Core\Extension\ModuleInstaller->install() (Line: 83)
Drupal\Core\ProxyClass\Extension\ModuleInstaller->install() (Line: 504)
Drupal\system\Form\ModulesListForm->submitForm()
call_user_func_array() (Line: 105)
Drupal\Core\Form\FormSubmitter->executeSubmitHandlers() (Line: 43)
Drupal\Core\Form\FormSubmitter->doSubmitForm() (Line: 589)
Drupal\Core\Form\FormBuilder->processForm() (Line: 144)
Drupal\autosave_form\Form\AutosaveFormBuilder->processForm() (Line: 321)
Drupal\Core\Form\FormBuilder->buildForm() (Line: 97)
Drupal\autosave_form\Form\AutosaveFormBuilder->buildForm() (Line: 73)
Drupal\Core\Controller\FormController->getContentResult()
call_user_func_array() (Line: 123)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 593)
Drupal\Core\Render\Renderer->executeInRenderContext() (Line: 121)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->wrapControllerExecutionInRenderContext() (Line: 97)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 183)
Symfony\Component\HttpKernel\HttpKernel->handleRaw() (Line: 76)
Symfony\Component\HttpKernel\HttpKernel->handle() (Line: 53)
Drupal\Core\StackMiddleware\Session->handle() (Line: 48)
Drupal\Core\StackMiddleware\KernelPreHandle->handle() (Line: 28)
Drupal\Core\StackMiddleware\ContentLength->handle() (Line: 32)
Drupal\big_pipe\StackMiddleware\ContentLength->handle() (Line: 116)
Drupal\page_cache\StackMiddleware\PageCache->pass() (Line: 90)
Drupal\page_cache\StackMiddleware\PageCache->handle() (Line: 48)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle() (Line: 51)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle() (Line: 36)
Drupal\Core\StackMiddleware\AjaxPageState->handle() (Line: 51)
Drupal\Core\StackMiddleware\StackedHttpKernel->handle() (Line: 709)
Drupal\Core\DrupalKernel->handle() (Line: 19)

Proposed resolution

Capture RuntimeException, do not WSOD. I leave how this is to be presented to the automatic_updates develoeprs, only noting that interruptions in internet should be considered an expected occurance and the software needs to cope with it.

Presumably similar would occur if the sever hosting the relevant API endpoints is offline while other endpoints (packaging) remained online allowing local download with composer.

Remaining tasks

User interface changes

API changes

Data model changes