Issue Summary

centos 7

redash version redash-5.0.0-beta

datasource mongodb

query snippets will loss some keyword (string start with ‘$’) , if the query snippet is {"$match":{“key”: “value”}} and
is will be {"": {“key”: “value”}} when is using it

Technical details:

Redash Version: v5.0.0-beta
Browser/OS: chrome 67.0.3396.99 mac os 10.13.1
How did you install Redash:
install in centos7 follow

there is the issue