How to fix the Postgrest issue while fetching records

I am using PostgRest 8.0.0 and Postgres DB v14. I am facing the following error for selection of rows in a table. http://localhost:3000/table

error:

{
    "hint": null,
    "message": "invalid configuration parameter name \"request.header.user-agent\"",
    "code": "42602",
    "details": "Custom parameter names must be two or more simple identifiers separated by dots."
}