diff --git a/addons/stock/controllers/main.py b/addons/stock/controllers/main.py
index f508ba19ffd..805b9378428 100644
--- a/addons/stock/controllers/main.py
+++ b/addons/stock/controllers/main.py
@@ -1,8 +1,9 @@
 # -*- coding: utf-8 -*-
+import werkzeug
+from werkzeug.exceptions import InternalServerError
 
 from odoo import http
 from odoo.http import request
-from odoo.tools import html_escape
 
 import json
 
@@ -32,4 +33,9 @@ class StockReportController(http.Controller):
                 'message': 'Odoo Server Error',
                 'data': se
             }
-            return request.make_response(html_escape(json.dumps(error)))
+            res = werkzeug.wrappers.Response(
+                json.dumps(error),
+                status=500,
+                headers=[("Content-Type", "application/json")]
+            )
+            raise InternalServerError(response=res) from e
diff --git a/addons/web/controllers/report.py b/addons/web/controllers/report.py
index 8ba955f378d..e7001a11c9d 100644
--- a/addons/web/controllers/report.py
+++ b/addons/web/controllers/report.py
@@ -12,7 +12,6 @@ from werkzeug.urls import url_parse
 
 from odoo import http
 from odoo.http import content_disposition, request
-from odoo.tools import html_escape
 from odoo.tools.safe_eval import safe_eval, time
 
 
@@ -144,7 +143,12 @@ class ReportController(http.Controller):
                 'message': "Odoo Server Error",
                 'data': se
             }
-            return request.make_response(html_escape(json.dumps(error)))
+            res = werkzeug.wrappers.Response(
+                json.dumps(error),
+                status=500,
+                headers=[("Content-Type", "application/json")]
+            )
+            raise werkzeug.exceptions.InternalServerError(response=res) from e
 
     @http.route(['/report/check_wkhtmltopdf'], type='json', auth="user")
     def check_wkhtmltopdf(self):