Fixed build error on Unit Tests!!!
MODIFY
test/api/ocpp/json/OCPPJsonService16.ts
test/api/ocpp/json/OCPPJsonService16.ts
@@ -2,7 +2,7 @@ import { OCPP15MeterValuesRequest, OCPPAuthorizeRequest, OCPPAuthorizeResponse,
import { MessageType } from '../../../../src/types/WebSocket';
import OCPPService from '../OCPPService';
-import Utils from '../../../utils/Utils';
+import Utils from '../../../../src/utils/Utils';
import WSClient from '../../../../src/client/websocket/WSClient';
import config from '../../../config';
import { performance } from 'perf_hooks';

Fixed build error on Unit Tests!!!