HH\Asio\ResultOrExceptionWrapper::getException

Return the underlying exception, or fail with invariant violation

public function getException(): Exception;

• if the operation succeeded: fails with invariant violation
• if the operation failed: returns the exception indicating failure

Returns

• Exception - The exception that the Awaitable threw upon failure, or an InvariantException if there is no exception (i.e., because the Awaitable succeeded).