fix: smtp mail issue resolve

Author: prafull-opensignlabs

apps/OpenSignServer/index.js

@@ -18,6 +18,7 @@ import FSFilesAdapter from 'parse-server-fs-adapter';
 import AWS from 'aws-sdk';
 import { app as customRoute } from './cloud/customRoute/customApp.js';
 import { exec } from 'child_process';
+import { createTransport } from 'nodemailer';
 
 const spacesEndpoint = new AWS.Endpoint(process.env.DO_ENDPOINT);
 // console.log("configuration ", configuration);