Error when deleting a module

[ro-la]

I have tried to delete the module Historic events (Module folder: /modules_v4/hh-historic-events-main)

In the Upgrade Wizard I receive the following errors

Upgrade wizard

It can take several minutes to download and install the upgrade. Be patient.

Backup…
Cannot assign null to property Jefferson49\Webtrees\Module\CustomModuleManager\RequestHandlers\ModuleUpgradeWizardStep::$module_update_service of type Jefferson49\Webtrees\Module\CustomModuleManager\ModuleUpdates\CustomModuleUpdateInterface …/modules_v4/custom_module_manager/src/RequestHandlers/ModuleUpgradeWizardStep.php:160
#0 …/app/Http/Middleware/RequestHandler.php(43): Jefferson49\Webtrees\Module\CustomModuleManager\RequestHandlers\ModuleUpgradeWizardStep->handle(Object(Nyholm\Psr7\ServerRequest))
#1 …/app/Http/Dispatcher.php(76): Fisharebest\Webtrees\Http\Middleware\RequestHandler->process(Object(Nyholm\Psr7\ServerRequest), Object(Fisharebest\Webtrees\Http\RequestHandlers\NotFound))
#2 …/modules_v4/custom_module_manager/src/CustomModuleManager.php(591): Psr\Http\Server\RequestHandlerInterface@anonymous->handle(Object(Nyholm\Psr7\ServerRequest))
#3 …/app/Http/Dispatcher.php(76): Jefferson49\Webtrees\Module\CustomModuleManager\CustomModuleManager->process(Object(Nyholm\Psr7\ServerRequest), Object(Psr\Http\Server\RequestHandlerInterface@anonymous))

I have tried an other module to install and then to delete it without any problem.

[Jefferson49]

Thank you for reporting the issue. I can reproduce it in my own webtrees installation.

Root cause: This is a new module, which I have not added yet to the list of custom modules in Custom Module Manager (CMM). While installation with CMM is not offered yet, deleting should work. This is a bug.