Better error handling

validata_ui/views.py

@@ -258,8 +258,15 @@ def validate(schema_url, source: ValidataSource):
             data = {'schema': schema_url}
             req = requests.post(api_url, data=data, files=files, headers=headers)
 
+        # 400
+        if req.status_code == 400:
+            json_response = req.json()
+            flash_error("Une erreur est survenue durant la validation: {}"
+                        .format(json_response.get('message')))
+            return redirect(url_for("home"))
+
         if not req.ok:
-            flash_error("{}: :(".format(req.status_code))
+            flash_error("Un erreur s'est produite côté serveur :-(")
             return redirect(url_for("home"))
 
         json_response = req.json()