feat: do not redirect on 404/500 (#14724)

superset/views/base.py

@@ -31,6 +31,7 @@ from flask import (
     redirect,
     request,
     Response,
+    send_file,
     session,
 )
 from flask_appbuilder import BaseView, Model, ModelView
@@ -43,6 +44,7 @@ from flask_babel import get_locale, gettext as __, lazy_gettext as _
 from flask_jwt_extended.exceptions import NoAuthorizationError
 from flask_wtf.csrf import CSRFError
 from flask_wtf.form import FlaskForm
+from pkg_resources import resource_filename
 from sqlalchemy import or_
 from sqlalchemy.orm import Query
 from werkzeug.exceptions import HTTPException
@@ -390,7 +392,8 @@ def show_http_exception(ex: HTTPException) -> FlaskResponse:
         and not config["DEBUG"]
         and ex.code in {404, 500}
     ):
-        return redirect(f"/static/assets/{ex.code}.html")
+        path = resource_filename("superset", f"static/assets/{ex.code}.html")
+        return send_file(path)
 
     return json_errors_response(
         errors=[