# Internal Server Error when using filter in Flux

**URL:** <https://community.influxdata.com/t/internal-server-error-when-using-filter-in-flux/12441>\
**Category:** Fluxlang\
**Created:** [December 28, 2019, 8:02am UTC](https://community.influxdata.com/t/internal-server-error-when-using-filter-in-flux/12441 "2019-12-28T08:02:12Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![m50434](https://avatars.discourse-cdn.com/v4/letter/m/53a042/32.png) [@m50434](https://community.influxdata.com/u/m50434)\
**Post date:** [December 28, 2019, 8:02am UTC](https://community.influxdata.com/t/internal-server-error-when-using-filter-in-flux/12441/1 "2019-12-28T08:02:12Z")

</div>

Hi,  
Im playing with Flux (influxdb 1.7) using Grafana.

When I type

> ```
> from(bucket: "iobroker")
> |> range(start: -5m)
> 
> ```

I get the data displayed… so the connection works fine.

> _#datatype,string,long,dateTime:RFC3339,dateTime:RFC3339,dateTime:RFC3339,boolean,string,string_  
> _#group,false,false,true,true,false,false,true,true_  
> _#default,\_result,_  
> _,result,table,\_start,\_stop,\_time,\_value,\_field,\_measurement_  
> _,0,2019-12-28T07:53:31.724972723Z,2019-12-28T07:58:31.724972723Z,2019-12-28T07:53:37.45Z,true,ack,mqtt.0.Stromzaehler\_Aktuell_  
> _,0,2019-12-28T07:53:31.724972723Z,2019-12-28T07:58:31.724972723Z,2019-12-28T07:53:49.287Z,true,ack,mqtt.0.Stromzaehler\_Aktuell_  
> _,0,2019-12-28T07:53:31.724972723Z,2019-12-28T07:58:31.724972723Z,2019-12-28T07:54:01.418Z,true,ack,mqtt.0.Stromzaehler\_Aktuell_  
> …

But when Im starting to use any filter function, for example

> ```
> from(bucket: "iobroker")
> |> filter(fn: (r) => r["_measurement"] == "mqtt.0.Stromzaehler_Aktuell")
> |> range(start: -5m)
> 
> ```

I get “InfluxDB Error: Internal Server Error”.  
This is the Json-Error-Object:

```
message:"InfluxDB Error: Internal Server Error"
data:Object
error:"Internal Server Error"
response:"error "error in building plan while starting program: cannot submit unbounded read to ""iobroker""; try bounding 'from' with a call to 'range'" "
message:"Internal Server Error"
config:Object
method:"POST"
url:"api/datasources/proxy/5/flux/api/v2/query?org=undefined"
params:Object
data:"from(bucket: "iobroker") |> filter(fn: (r) => r["_measurement"] == "mqtt.0.Stromzaehler_Aktuell") |> range(start: -5m) "
precision:"ms"

```

Any ideas what I did wrong???

---

<div class="post-metadata">

**Author:** ![m50434](https://avatars.discourse-cdn.com/v4/letter/m/53a042/32.png) [@m50434](https://community.influxdata.com/u/m50434)\
**Post date:** [December 28, 2019, 6:53pm UTC](https://community.influxdata.com/t/internal-server-error-when-using-filter-in-flux/12441/2 "2019-12-28T18:53:37Z")

</div>

Hi there:  
I changed the name of the measurement to names without dots!  
For example mqtt.0.Stromzaehler\_Aktuell to StromzaehlerAktuell.  
Now it works.