diff --git a/application/source/data/datasource/server/restapi.mjs b/application/source/data/datasource/server/restapi.mjs
index 534f5816c4d73214d28bf4349c7a48280c4a88f4..47aa3f4b5ff32479d897c3ff8a813b62fcb7d564 100644
--- a/application/source/data/datasource/server/restapi.mjs
+++ b/application/source/data/datasource/server/restapi.mjs
@@ -6,7 +6,7 @@
  */
 
 import { internalSymbol, instanceSymbol } from "../../../constants.mjs";
-import { isObject } from "../../../types/is.mjs";
+import { isObject,isFunction } from "../../../types/is.mjs";
 import { Server } from "../server.mjs";
 import { WriteError } from "./restapi/writeerror.mjs";