chore(): minor fixes around codebase

src/backend/api/v1/reports/endpoints.py

@@ -1,14 +1,15 @@
 from http import HTTPStatus
 from uuid import UUID
 
+from django.core.exceptions import ValidationError
 from django.http import Http404, HttpRequest
 from django.utils.dateparse import parse_datetime
 from ninja import Router
 
-from api.v1.auth.endpoints import jwt_bearer
 from api.v1.reports.schemas import ExperimentReportOut
 from apps.experiments.models import Experiment
 from apps.reports.services import build_experiment_report
+from apps.users.auth.bearer import jwt_bearer
 
 router = Router(tags=["reports"], auth=jwt_bearer)
 
@@ -34,11 +35,15 @@ def get_experiment_report(
     if start_date:
         parsed_start = parse_datetime(start_date)
         if parsed_start is None:
-            raise Http404
+            raise ValidationError(
+                {"start_date": "Must be a valid ISO 8601 datetime."}
+            )
     if end_date:
         parsed_end = parse_datetime(end_date)
         if parsed_end is None:
-            raise Http404
+            raise ValidationError(
+                {"end_date": "Must be a valid ISO 8601 datetime."}
+            )
 
     report_data = build_experiment_report(
         experiment=experiment,