Unable to get current scene info

I’m trying to get current scene info with local API, but it just not working anyway.
Other APIs also same, but I’m able to get estimate_print_time under API get_device
btw, load_form API also not working


What can I do with this ? Please help.

I did run the PreFormServer.exe in docker.

the API received request, but no expected response.

Updates:

Found out if let it async=true


the operation is FAILED