HTTP API service stuck and no response to all request


I met the issue that API service no responding to any request on vyos 1.3.1s1 release.
After a few days long run, vyos api service didn’t responding any request. How to restart http api service ?

curl --location --request POST 'https://xxxxx/retrieve'      --form data='{"op": "showConfig", "path": ["interfaces","wireguard","wg01","port"]}'      --form key="**********"
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100   334    0     0  100   334      0      1  0:05:34  0:04:07  0:01:27     0

How to fix this issue like this?