[BUG] Failed to load API definition
**Describe the bug**
When going to http://domain:8000

Failed to load API definition.
Fetch error
Not Found /api/openapi.json

**To Reproduce**
Steps to reproduce the behavior:

Docker install using BitcartCC configurator 

**Expected behavior**
BitcartCC main page should be loaded ?

**Screenshots**
![image](https://github.com/bitcart/bitcart/assets/35155544/27f12d1d-add6-421a-b02c-86fdca4b39aa)

**Desktop :**

- OS: Linux, Ubuntu 20.04
- Version : latest, master branch
