Fixes #956. Return 404 for missing objects in GenericEntityApiController.php

controllers/GenericEntityApiController.php

@@ -50,6 +50,10 @@ class GenericEntityApiController extends BaseApiController
 			}
 
 			$object = $this->getDatabase()->{$args['entity']}($args['objectId']);
+            if ($object == null) {
+                return $this->GenericErrorResponse($response, 'Object not found', 404);
+            }
+
 			$object['userfields'] = $userfields;
 
 			return $this->ApiResponse($response, $object);

grocy.openapi.json

@@ -395,6 +395,16 @@
 								}
 							}
 						}
+					},
+					"404": {
+						"description": "Object not found",
+						"content": {
+							"application/json": {
+								"schema": {
+									"$ref": "#/components/schemas/GenericErrorResponse"
+								}
+							}
+						}
 					}
 				}
 			},