Graphs not working, data sets empty

[brantje]

Hi there,
When i click on an check, the graphs, down, data, etc is empty.

However, the data is inserted into the database.
I get frames from the socket server

`````` 5:::{"name":"ping","args":[{"__v":0,"monitorName":"origin","check":"54d12a379a420dc703000002","time":81,"isResponsive":true,"isUp":true,"_id":"54d12bfe44ed8bf70d000005","tags":[],"timestamp":"2015-02-03T20:13:50.368Z"}]}```

The request to the api:
/api/checks/54d12a379a420dc703000002/stats/month?begin=1422745200000&end=1425164399999
Response is an empty array.

So what is wrong and how can i solve this?

Edit; They are working when i zoom in. It looks like the collection checkdailystats is empty at the moment.