call to the /datasets/dataset_id/documents/metadata interface was successful, But the metadata displayed on the interface is empty

Self Checks

• I have read the Contributing Guide and Language Policy.
• This is only for bug report, if you would like to ask a question, please head to Discussions.
• I have searched for existing issues search for existing issues, including closed ones.
• I confirm that I am using English to submit this report, otherwise it will be closed.
• 【中文用户 & Non English User】请使用英语提交，否则会被关闭 ：）
• Please do not modify this template :) and fill in all the required fields.

Dify version

1.91.

Cloud or Self Hosted

Self Hosted (Docker)

Steps to reproduce

call to the /datasets/dataset_id/documents/metadata interface was successful, But the metadata displayed on the interface is empty

✔️ Expected Behavior

The API description does not provide any information about the operation metadata The call to the /datasets/dataset_id/documents/metadata interface was successful, But the metadata displayed on the interface is empty

❌ Actual Behavior

No response