@Inevitable360 I've found the problem !
`gigawallet@server:~/gigawallet$ curl -X POST http://localhost:8081/account/dogecoinlab/invoice -H 'Content-Type: application/json' -d '{"required_confirmations":1,"items":[{"type":"item","name":"GigaWallet Test","value":"10.00","quantity":1}]}'
gigawallet@server:~/gigawallet$ curl -X POST http://localhost:8081/account/dogecoinlab/invoice/ -H 'Content-Type: application/json' -d '{"required_confirmations":1,"items":[{"type":"item","name":"GigaWallet Test","value":"10.00","quantity":1}]}'
{"id":"DRzLr3xhAYjKwRjE6fRJTSRKY2nHgNzJF2","items":[{"type":"item","name":"GigaWallet Test","sku":"","description":"","value":"10","quantity":1,"image_link":""}],"created":"2024-02-15T19:50:12.262241281+01:00","total":"10","pay_to_address":"DRzLr3xhAYjKwRjE6fRJTSRKY2nHgNzJF2","required_confirmations":1,"part_payment_detected":false,"total_payment_detected":true,"total_payment_confirmed":false,"payment_unconfirmed":false,"estimate_seconds_to_confirm":0}gigawallet@server:~/gigawallet$`
It seems the api url need the final slash form some stuff !