from fastapi import Request from fastapi.exceptions import HTTPException from fastapi.templating import Jinja2Templates templates = Jinja2Templates(directory="templates") class MyHTTPException(HTTPException): pass def my_http_exception_handler(request: Request, exc: HTTPException): return templates.TemplateResponse( "errors/error.html", {"request": request, "message": f"{exc.status_code}. {exc.detail}."}, status_code=exc.status_code, )