TypeError: Cannot read property 'commandsTakeWriteConcern' of null

[lalit117]

mongoose version: 5.5.0

I am executing aggregation query on mongodb as soon as connection established.
but I am getting below issue sometimes and sometimes query get executed successfully

some people facing same issue but while dropping db
4490

I am attaching stack trace :

(node:1) DeprecationWarning: current URL string parser is deprecated, and will be removed in a future version. To use the new parser, pass option { useNewUrlParser: true } to

(node:1) DeprecationWarning: collection.ensureIndex is deprecated. Use createIndexes instead.

**TypeError: Cannot read property 'commandsTakeWriteConcern' of null

File "/srv/slingshot/node_modules/mongoose/node_modules/mongodb/lib/operations/aggregate.js", line 53, col 52, in aggregate
const takesWriteConcern = topology.capabilities().commandsTakeWriteConcern;

File "/srv/slingshot/node_modules/mongoose/node_modules/mongodb/lib/collection.js", line 1694, col 10, in Collection.aggregate
return aggregate(this.s.db, this, pipeline, options, callback);

File "/srv/slingshot/node_modules/newrelic/lib/shim/shim.js", line 946, col 24, in Collection.wrapper [as aggregate]
return fnApply.call(fn, this, arguments)

File "/srv/slingshot/node_modules/mongoose/lib/drivers/node-mongodb-native/collection.js", line 146, col 28, in NativeCollection.(anonymous function) [as aggregate]
return collection[i].apply(collection, args);

File "/srv/slingshot/node_modules/mongoose/lib/collection.js", line 126, col 30, in NativeCollection.Collection.doQueue
this[this.queue[i][0]].apply(this, this.queue[i][1]);

File "/srv/slingshot/node_modules/mongoose/lib/collection.js", line 86, col 24, in immediate
immediate(() => this.doQueue());
File "internal/process/next_tick.js", line 70, col 11, in process.internalTickCallback

I am not able to write exact steps to reproduce issue, as it occurring randomly.
can anyone provide me help regarding this issue, what could be reason for issue ?
Thanks in advance.

[vkarpov15]

Not much I can really do about this issue without seeing some of your code, but here's a few suggestions for what you can do:

1. Make sure you wait for mongoose.connect() to succeed before executing your aggregate() call, using mongoose.connect().then(cb) or await mongoose.connect()

2. Try running without New Relic. New Relic does a lot of monkeypatching and has been known to cause bugs with MongoDB.

3. Upgrade to Mongoose 5.7, which no longer has the offending code.