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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Transcoding error information missing in version 2.9.0","articleBody":"A regression was introduced in PR https://github.com/googleapis/python-api-core/pull/428 where information is missing in the transcoding error message [here](https://github.com/googleapis/python-api-core/blob/main/google/api_core/path_template.py#L319).\r\n\r\nUsing the following code for `google-cloud-compute`\r\n```\r\nfrom google.cloud import compute_v1\r\n\r\nproject = \"project-XXX\"\r\nzone = \"us-central1-a\"\r\n\r\ninstance_groups_list_instances_request_resource = compute_v1.InstanceGroupsListInstancesRequest()\r\ninstance_groups_list_instances_request_resource.instance_state = \"RUNNING\"\r\ninstance_groups_client = compute_v1.InstanceGroupsClient()\r\n\r\ninstance_groups_list = instance_groups_client.list_instances(project=project, zone=zone,  instance_groups_list_instances_request_resource=instance_groups_list_instances_request_resource)\r\n\r\nfor instance in instance_groups_list:\r\n    print(instance.name, instance.labels)\r\n```\r\n\r\nUsing `google-api-core==2.8.2`, the error message is \r\n```\r\nValueError: Request {'zone': 'us-central1-a', 'project': 'project-XXX', 'instance_groups_list_instances_request_resource': {'instance_state': 'RUNNING'}, 'instance_group': ''} does not match any URL path template in available HttpRule's ['/compute/v1/projects/{project}/zones/{zone}/instanceGroups/{instance_group}/listInstances']\r\n```\r\n\r\nUsing `google-api-core==2.9.0`, the error message is \r\n```\r\nRequest {} does not match any URL path template in available HttpRule's ['/compute/v1/projects/{project}/zones/{zone}/instanceGroups/{instance_group}/listInstances']\r\n```\r\n","author":{"url":"https://github.com/parthea","@type":"Person","name":"parthea"},"datePublished":"2022-09-13T21:00:46.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/440/python-api-core/issues/440"}