start calc for region: 23
assert: command failed: { "code" : 2, "ok" : 0, "errmsg" : "cannot compare to undefined" } : aggregate failed
_getErrorWithCode@src/mongo/shell/utils.js:25:13
doassert@src/mongo/shell/assert.js:16:14
assert.commandWorked@src/mongo/shell/assert.js:370:5
DBCollection.prototype.aggregate@src/mongo/shell/collection.js:1319:5
@(shell):28:17
DBQuery.prototype.forEach@src/mongo/shell/query.js:501:1
@(shell):4:1
@(shell):1:1

2017-02-07T14:28:06.277+0300 E QUERY    [main] Error: command failed: { "code" : 2, "ok" : 0, "errmsg" : "cannot compare to undefined" } : aggregate failed :

_getErrorWithCode@src/mongo/shell/utils.js:25:13

doassert@src/mongo/shell/assert.js:16:14

assert.commandWorked@src/mongo/shell/assert.js:370:5

DBCollection.prototype.aggregate@src/mongo/shell/collection.js:1319:5

@(shell):28:17

DBQuery.prototype.forEach@src/mongo/shell/query.js:501:1

@(shell):4:1

@(shell):1:1