error JSON.parse: unexpected character at line 1 column 1 of the JSON data

Describe the bug A clear and concise description of what the bug is. when change the cathegori/collection of a link, I get this error "JSON.parse: unexpected character at line 1 column 1 of the JSON data". I am using a NPM reverse proxy manager. It seems to work well without the reverse proxy

To Reproduce Steps to reproduce the behavior:

1. download the docker-compose.yml and and .env file using curl from linkwarden official website
2. change the four suggested variables
3. deploy via arcane docker manager

Desktop (please complete the following information):

• OS: armbian
• Browser: firefox

Additional context Add any other context about the problem here.