sometimes menshen returns `404 page not found` for `/api/5/openvpn/cert`

pea@peabox:menshen curl -v localhost:8443/api/5/openvpn/cert -H "Host: localhost:8443" -H "User-Agent: Go-http-client/1.1" -H "Accept: application/json" -H "Accept-Encoding: gzip"

* Host localhost:8443 was resolved.
* IPv6: ::1
* IPv4: 127.0.0.1
*   Trying [::1]:8443...
* Connected to localhost (::1) port 8443
* using HTTP/1.x
> GET /api/5/openvpn/cert HTTP/1.1
> Host: localhost:8443
> User-Agent: Go-http-client/1.1
> Accept: application/json
> Accept-Encoding: gzip
> 
* Request completely sent off
< HTTP/1.1 200 OK
< Cache-Control: no-cache
< Content-Type: text/plain; charset=UTF-8
< Date: Wed, 16 Oct 2024 17:30:59 GMT
< Content-Length: 19
< 
404 page not found
* Connection #0 to host localhost left intact

But then in the next run it works:

pea@peabox:menshen curl -v localhost:8443/api/5/openvpn/cert -H "Host: localhost:8443" -H "User-Agent: Go-http-client/1.1" -H "Accept: application/json" -H "Accept-Encoding: gzip"
                                                                                                                 
* Host localhost:8443 was resolved.                                                                              
* IPv6: ::1                                                                                                      
* IPv4: 127.0.0.1                                                                                                
*   Trying [::1]:8443...                                                                                         
* Connected to localhost (::1) port 8443                                                                         
* using HTTP/1.x                                                                                                 
> GET /api/5/openvpn/cert HTTP/1.1                                                                               
> Host: localhost:8443                                                                                           
> User-Agent: Go-http-client/1.1                                                                                 
> Accept: application/json                                                                                       
> Accept-Encoding: gzip                                                                                          
>                                                       
* Request completely sent off                           
< HTTP/1.1 200 OK                                                                                                
< Cache-Control: no-cache                                                                                        
< Content-Type: text/plain; charset=UTF-8                                                                        
< Date: Wed, 16 Oct 2024 17:32:59 GMT                                                                            
< Transfer-Encoding: chunked                                                                                     
<
-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
* Connection #0 to host localhost left intact

I'm using latest menshen (main with 364d0626).

    go run ./cmd/menshen/main.go \
            --verbose \
            --from-eip-url https://black.riseup.net:4430/3/config/eip-service.json \
            --allow-bridge-list \
            --allow-gateway-list \
            --client-cert-url https://api.black.riseup.net:4430/3/cert \
            --ca-file riseup-ca.pem \
            --from-provider-json-file provider.json
}