TypeError: json.metadata.collection.filter is not a function

we are star getting errors like:
```
ia:feeder:albums-async:[warning] we failed on fetching details about album: TypeError: json.metadata.collection.filter is not a function
    at axios.get.catch.then.res (/srv/src/provider/albums.js:46:12)
    at <anonymous>
    at process._tickDomainCallback (internal/process/next_tick.js:229:7)
```