diff --git a/merkle-tree/src/db/common/adminDbConnection.js b/merkle-tree/src/db/common/adminDbConnection.js
index 7b74abc..c9d82c8 100644
--- a/merkle-tree/src/db/common/adminDbConnection.js
+++ b/merkle-tree/src/db/common/adminDbConnection.js
@@ -9,12 +9,7 @@ else url = `mongodb://${host}:${port}`;
 
 dbConnections.admin = mongoose.createConnection(`${url}/${databaseName}`, {
   useNewUrlParser: true,
-  useCreateIndex: true,
-  authSource: "admin",
-  user: "admin",
-  pass: "admin",
-  useUnifiedTopology: true,
-  useFindAndModify: false 
+  useCreateIndex: true, 
 });
 
 const adminDbConnection = dbConnections.admin;
diff --git a/merkle-tree/src/utils-web3.js b/merkle-tree/src/utils-web3.js
index ed8e881..6e023e4 100644
--- a/merkle-tree/src/utils-web3.js
+++ b/merkle-tree/src/utils-web3.js
@@ -208,11 +208,6 @@ async function subscribeToEvent(
   */
   // changed below for sepolia ws url - NOT TESTED ON ANY OTHER BLOCKCHAIN
 
-  // const eventJsonInterface = web3.utils._.find(
-  //   contractInstance._jsonInterface, // eslint-disable-line no-underscore-dangle
-  //   o => o.name === eventName && o.type === 'event',
-  // );
-
   const eventJsonInterface = contractInstance._jsonInterface.find(o => o.name === eventName && o.type === 'event');
 
   logger.info(`eventJsonInterface: ${JSON.stringify(eventJsonInterface, null