Greenbone Security Assistant, does the scan but don't find notting

Please see the “Results” tab. Log messages which provide information about the scan are shown there. Error Messages are only shown for severe problems.

For what it is worth, I suspect you configured the scan task without providing a credential for the target. Credentials are used to authenticate to the target of the scan, which allows the scanner to identify much more vulnerabilities.

For an unauthenticated scan, a report similar to yours can be quite normal for a reasonably up-to-date target.

For more information on authenticated scans see 10 Scanning a System — Greenbone Enterprise Appliance 22.04.13 documentation.