ParseServerLiveQuery crashes on client side query.

[majidhassan]

Issue Description

I'm using parse-server live queries and I noticed, that a certain query written and subscribed to on the client side crashed my parse-server cloud call. The cloud call was interrupted and I found liveQuery related errors in the logs.

Steps to reproduce

1. Run liveQuery with parse-server using PM2.
2. Subscribe to a query similar to the below:

var query = new Parse.Query("MyObject");
query.notEqualTo("MyKey", null); // 'null' is what crashed it, when changed to 'undefined' it worked fine

3. Run cloud call triggering the query subscribed to in 2.

Expected Results

Cloud call to continue normally, and only crash on the client side.

Actual Outcome

ParseServerLiveQuery crashed.

Environment Setup

• Server

  • parse-server version: 2.3.8
  • Operating System: Ubuntu 16.04.3 x64
  • Hardware: DigitalOcean 1 GB (RAM) / 25 GB Disk
  • Remote Server: DigitalOcean

• Database

  • MongoDB version: 3.4
  • Storage engine: MMAPv1
  • Hardware:
  • Remote Server: mLab

Logs/Trace

[dplewis]

@majidhassan I see you are running an older version of Parse Server. Can you update to latest version and see if the issue persists?

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.