Update error response

Author: schani

openapi/swagger.json

@@ -2935,12 +2935,25 @@
                 "schema": {
                   "type": "object",
                   "properties": {
-                    "maxUploadSize": {
-                      "type": "number"
+                    "error": {
+                      "type": "object",
+                      "properties": {
+                        "type": {
+                          "type": "string"
+                        },
+                        "message": {
+                          "type": "string"
+                        }
+                      },
+                      "required": [
+                        "type",
+                        "message"
+                      ],
+                      "additionalProperties": false
                     }
                   },
                   "required": [
-                    "maxUploadSize"
+                    "error"
                   ],
                   "additionalProperties": false
                 }