Attempting to install the Microsoft Graph SDK is resulting in strange behaviour.
When running composer install microsoft/microsoft-graph I see this output:
Class Beta\Microsoft\Graph\IdentityGovernance\Model\Task located in ./vendor/microsoft/microsoft-graph/src/Beta/Microsoft/Graph/IdentityGovernanceNamespace/Model/Task.php does not comply with psr-4 autoloading standard. Skipping.
Class Beta\Microsoft\Graph\IdentityGovernance\Model\TaskReport located in ./vendor/microsoft/microsoft-graph/src/Beta/Microsoft/Graph/IdentityGovernanceNamespace/Model/TaskReport.php does not comply with psr-4 autoloading standard. Skipping.
Class Beta\Microsoft\Graph\IdentityGovernance\Model\LifecycleTaskCategory located in ./vendor/microsoft/microsoft-graph/src/Beta/Microsoft/Graph/IdentityGovernanceNamespace/Model/LifecycleTaskCategory.php does not comply with psr-4 autoloading standard. Skipping.
Class Beta\Microsoft\Graph\IdentityGovernance\Model\WorkflowTriggerTimeBasedAttribute located in ./vendor/microsoft/microsoft-graph/src/Beta/Microsoft/Graph/IdentityGovernanceNamespace/Model/WorkflowTriggerTimeBasedAttribute.php does not comply with psr-4 autoloading standard. Skipping.
Class Beta\Microsoft\Graph\IdentityGovernance\Model\TaskProcessingResult located in ./vendor/microsoft/microsoft-graph/src/Beta/Microsoft/Graph/IdentityGovernanceNamespace/Model/TaskProcessingResult.php does not comply with psr-4 autoloading standard. Skipping.
Class Beta\Microsoft\Graph\IdentityGovernance\Model\TimeBasedAttributeTrigger located in ./vendor/microsoft/microsoft-graph/src/Beta/Microsoft/Graph/IdentityGovernanceNamespace/Model/TimeBasedAttributeTrigger.php does not comply with psr-4 autoloading standard. Skipping.
Class Beta\Microsoft\Graph\IdentityGovernance\Model\WorkflowExecutionConditions located in ./vendor/microsoft/microsoft-graph/src/Beta/Microsoft/Graph/IdentityGovernanceNamespace/Model/WorkflowExecutionConditions.php does not comply with psr-4 autoloading standard. Skipping.
Class Beta\Microsoft\Graph\IdentityGovernance\Model\TriggerAndScopeBasedConditions located in ./vendor/microsoft/microsoft-graph/src/Beta/Microsoft/Graph/IdentityGovernanceNamespace/Model/TriggerAndScopeBasedConditions.php does not comply with psr-4 autoloading standard. Skipping.
Class Beta\Microsoft\Graph\IdentityGovernance\Model\WorkflowVersion located in ./vendor/microsoft/microsoft-graph/src/Beta/Microsoft/Graph/IdentityGovernanceNamespace/Model/WorkflowVersion.php does not comply with psr-4 autoloading standard. Skipping.
Class Beta\Microsoft\Graph\IdentityGovernance\Model\CustomTaskExtensionOperationStatus located in ./vendor/microsoft/microsoft-graph/src/Beta/Microsoft/Graph/IdentityGovernanceNamespace/Model/CustomTaskExtensionOperationStatus.php does not comply with psr-4 autoloading standard. Skipping.
Class Beta\Microsoft\Graph\IdentityGovernance\Model\LifecycleWorkflowsContainer located in ./vendor/microsoft/microsoft-graph/src/Beta/Microsoft/Graph/IdentityGovernanceNamespace/Model/LifecycleWorkflowsContainer.php does not comply with psr-4 autoloading standard. Skipping.
Class Beta\Microsoft\Graph\IdentityGovernance\Model\WorkflowTemplate located in ./vendor/microsoft/microsoft-graph/src/Beta/Microsoft/Graph/IdentityGovernanceNamespace/Model/WorkflowTemplate.php does not comply with psr-4 autoloading standard. Skipping.
Class Beta\Microsoft\Graph\IdentityGovernance\Model\CustomTaskExtensionCallbackConfiguration located in ./vendor/microsoft/microsoft-graph/src/Beta/Microsoft/Graph/IdentityGovernanceNamespace/Model/CustomTaskExtensionCallbackConfiguration.php does not comply with psr-4 autoloading standard. Skipping.
Class Beta\Microsoft\Graph\IdentityGovernance\Model\TaskDefinition located in ./vendor/microsoft/microsoft-graph/src/Beta/Microsoft/Graph/IdentityGovernanceNamespace/Model/TaskDefinition.php does not comply with psr-4 autoloading standard. Skipping.
Class Beta\Microsoft\Graph\IdentityGovernance\Model\Run located in ./vendor/microsoft/microsoft-graph/src/Beta/Microsoft/Graph/IdentityGovernanceNamespace/Model/Run.php does not comply with psr-4 autoloading standard. Skipping.
Class Beta\Microsoft\Graph\IdentityGovernance\Model\UserProcessingResult located in ./vendor/microsoft/microsoft-graph/src/Beta/Microsoft/Graph/IdentityGovernanceNamespace/Model/UserProcessingResult.php does not comply with psr-4 autoloading standard. Skipping.
Class Beta\Microsoft\Graph\IdentityGovernance\Model\WorkflowExecutionTrigger located in ./vendor/microsoft/microsoft-graph/src/Beta/Microsoft/Graph/IdentityGovernanceNamespace/Model/WorkflowExecutionTrigger.php does not comply with psr-4 autoloading standard. Skipping.
Class Beta\Microsoft\Graph\IdentityGovernance\Model\WorkflowBase located in ./vendor/microsoft/microsoft-graph/src/Beta/Microsoft/Graph/IdentityGovernanceNamespace/Model/WorkflowBase.php does not comply with psr-4 autoloading standard. Skipping.
Class Beta\Microsoft\Graph\IdentityGovernance\Model\LifecycleManagementSettings located in ./vendor/microsoft/microsoft-graph/src/Beta/Microsoft/Graph/IdentityGovernanceNamespace/Model/LifecycleManagementSettings.php does not comply with psr-4 autoloading standard. Skipping.
Class Beta\Microsoft\Graph\IdentityGovernance\Model\CustomTaskExtensionCalloutData located in ./vendor/microsoft/microsoft-graph/src/Beta/Microsoft/Graph/IdentityGovernanceNamespace/Model/CustomTaskExtensionCalloutData.php does not comply with psr-4 autoloading standard. Skipping.
Class Beta\Microsoft\Graph\IdentityGovernance\Model\CustomTaskExtensionCallbackData located in ./vendor/microsoft/microsoft-graph/src/Beta/Microsoft/Graph/IdentityGovernanceNamespace/Model/CustomTaskExtensionCallbackData.php does not comply with psr-4 autoloading standard. Skipping.
Class Beta\Microsoft\Graph\IdentityGovernance\Model\RuleBasedSubjectSet located in ./vendor/microsoft/microsoft-graph/src/Beta/Microsoft/Graph/IdentityGovernanceNamespace/Model/RuleBasedSubjectSet.php does not comply with psr-4 autoloading standard. Skipping.
Class Beta\Microsoft\Graph\IdentityGovernance\Model\WorkflowExecutionType located in ./vendor/microsoft/microsoft-graph/src/Beta/Microsoft/Graph/IdentityGovernanceNamespace/Model/WorkflowExecutionType.php does not comply with psr-4 autoloading standard. Skipping.
Class Beta\Microsoft\Graph\IdentityGovernance\Model\LifecycleWorkflowProcessingStatus located in ./vendor/microsoft/microsoft-graph/src/Beta/Microsoft/Graph/IdentityGovernanceNamespace/Model/LifecycleWorkflowProcessingStatus.php does not comply with psr-4 autoloading standard. Skipping.
Class Beta\Microsoft\Graph\IdentityGovernance\Model\UsersProcessingSummary located in ./vendor/microsoft/microsoft-graph/src/Beta/Microsoft/Graph/IdentityGovernanceNamespace/Model/UsersProcessingSummary.php does not comply with psr-4 autoloading standard. Skipping.
Class Beta\Microsoft\Graph\IdentityGovernance\Model\Workflow located in ./vendor/microsoft/microsoft-graph/src/Beta/Microsoft/Graph/IdentityGovernanceNamespace/Model/Workflow.php does not comply with psr-4 autoloading standard. Skipping.
Class Beta\Microsoft\Graph\IdentityGovernance\Model\LifecycleWorkflowCategory located in ./vendor/microsoft/microsoft-graph/src/Beta/Microsoft/Graph/IdentityGovernanceNamespace/Model/LifecycleWorkflowCategory.php does not comply with psr-4 autoloading standard. Skipping.
Class Beta\Microsoft\Graph\IdentityGovernance\Model\TaskReportSummary located in ./vendor/microsoft/microsoft-graph/src/Beta/Microsoft/Graph/IdentityGovernanceNamespace/Model/TaskReportSummary.php does not comply with psr-4 autoloading standard. Skipping.
Class Beta\Microsoft\Graph\IdentityGovernance\Model\UserSummary located in ./vendor/microsoft/microsoft-graph/src/Beta/Microsoft/Graph/IdentityGovernanceNamespace/Model/UserSummary.php does not comply with psr-4 autoloading standard. Skipping.
Class Beta\Microsoft\Graph\IdentityGovernance\Model\OnDemandExecutionOnly located in ./vendor/microsoft/microsoft-graph/src/Beta/Microsoft/Graph/IdentityGovernanceNamespace/Model/OnDemandExecutionOnly.php does not comply with psr-4 autoloading standard. Skipping.
Class Beta\Microsoft\Graph\IdentityGovernance\Model\CustomTaskExtension located in ./vendor/microsoft/microsoft-graph/src/Beta/Microsoft/Graph/IdentityGovernanceNamespace/Model/CustomTaskExtension.php does not comply with psr-4 autoloading standard. Skipping.
Class Beta\Microsoft\Graph\IdentityGovernance\Model\Parameter located in ./vendor/microsoft/microsoft-graph/src/Beta/Microsoft/Graph/IdentityGovernanceNamespace/Model/Parameter.php does not comply with psr-4 autoloading standard. Skipping.
Class Beta\Microsoft\Graph\IdentityGovernance\Model\RunSummary located in ./vendor/microsoft/microsoft-graph/src/Beta/Microsoft/Graph/IdentityGovernanceNamespace/Model/RunSummary.php does not comply with psr-4 autoloading standard. Skipping.
Class Beta\Microsoft\Graph\IdentityGovernance\Model\ValueType located in ./vendor/microsoft/microsoft-graph/src/Beta/Microsoft/Graph/IdentityGovernanceNamespace/Model/ValueType.php does not comply with psr-4 autoloading standard. Skipping.
Post installation, my composer.json contains "microsoft/microsoft-graph": "^1.74",
I cannot find any known issues around this? Any help appreciated.