Stream of RuntimeExceptions reported in log - Application is not setup via query() but directly

RuntimeException: App class OCA\Files_MindMap\AppInfo\Application is not setup via query() but directly

    /var/www/html/custom_apps/files_mindmap/lib/AppInfo/Application.php - line 12:

    OCP\AppFramework\App->__construct("files_mindmap", [])

    /var/www/html/custom_apps/files_mindmap/appinfo/app.php - line 31:

    OCA\Files_MindMap\AppInfo\Application->__construct()

    /var/www/html/lib/private/legacy/OC_App.php - line 304:

    require_once("/var/www/ht ... p")

    /var/www/html/lib/private/legacy/OC_App.php - line 186:

    OC_App::requireAppFile("files_mindmap")

    /var/www/html/lib/private/legacy/OC_App.php - line 140:

    OC_App::loadApp("files_mindmap")

    /var/www/html/lib/base.php - line 986:

    OC_App::loadApps()

    /var/www/html/index.php - line 36:

    OC::handleRequest()

Same as https://github.com/pawelrojek/nextcloud-drawio/issues/132

See also
https://github.com/nextcloud/ocsms/issues/330
https://github.com/nextcloud/maps/issues/384
https://github.com/nextcloud/calendar/pull/1958

Start with lib/AppInfo/Application.php and appinfo/app.php, then trace the loading path shown through OC_App::requireAppFile and OC_App::loadApp. Compare the reported setup with the related nextcloud-drawio, ocsms, maps, and calendar references. Done means the reported RuntimeException no longer appears when files_mindmap is loaded.