Getting error in create() method

MongoDB Atlas Atlas Search
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1

I am using the Atlas service to access a database from my Flutter project. The debug build is working fine but in the release build the create() method to instantiate the database object is giving some kind of error. I have added the INTERNET permission in the AndroidManifest.xml but the error is still there.
This is the log of the terminal running a release build

E/flutter (14697): [ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled Exception: Failed host lookup: 'dns.google.com'
E/flutter (14697): #0      IOClient.send (package:http/src/io_client.dart:94)
E/flutter (14697): <asynchronous suspension>
E/flutter (14697): #1      BaseClient._sendUnstreamed (package:http/src/base_client.dart:93)
E/flutter (14697): <asynchronous suspension>
E/flutter (14697): #2      HttpUtils._get (package:basic_utils/src/HttpUtils.dart:24)
E/flutter (14697): <asynchronous suspension>
E/flutter (14697): #3      HttpUtils.getForJson (package:basic_utils/src/HttpUtils.dart:49)
E/flutter (14697): <asynchronous suspension>
E/flutter (14697): #4      DnsUtils.lookupRecord (package:basic_utils/src/DnsUtils.dart:33)
E/flutter (14697): <asynchronous suspension>
E/flutter (14697): #5      decodeDnsSeedlist (package:mongo_dart/src/database/utils/dns_lookup.dart:19)
E/flutter (14697): <asynchronous suspension>
E/flutter (14697): #6      Db.create (package:mongo_dart/src/database/db.dart:271)
E/flutter (14697): <asynchronous suspension>
E/flutter (14697): #7      MongoDb.connect (package:student_portal/services/mongo_db.dart:21)
E/flutter (14697): <asynchronous suspension>
E/flutter (14697): #8      main (package:student_portal/main.dart:13)
E/flutter (14697): <asynchronous suspension>
E/flutter (14697):

21th line of the mongo_db.dart is

_db = await Db.create(mongoURL);

and in the 13th line of main, I am calling the connect method

Future<void> connect() async {
    _db = await Db.create(mongoURL);
    await _db!.open(secure: true);
  }