I apologize for the misunderstanding. The error message "This combination of host and port requires TLS" could have occurred if the right protocol is not used when connecting to the server.
In order to o find the root cause of that issue, I would check the possible causes in the** vdp-data-catalog.log** file located at <DENODO_HOME>\logs\vdp-data-catalog.
As a workaround, if possible, I would graphically do the export by logging into the Data Catalog.
You can have a look at the section [Import and Export Data Catalog Metadata](https://community.denodo.com/docs/html/browse/latest/en/vdp/data_catalog/administration/import_export/import_export#import-and-export-data-catalog-metadata) of the Data Catalog Guide.
If you still need help and you have a valid support user account, please open a new support case at the [Denodo Support site](https://support.denodo.com/) so that the support team can assist you.
Hope this helps!