Hi @AnkeWigger,
This is the root of the error message - your computation environment lacks sufficient memory capacity to run this command. In general, the silva classifiers need ~16 GB of memory.
There are several excellent forum posts on this support forum detailing possible workarounds (at the cost of runtime):
- Silva memory error - #5 by Nicholas_Bokulich
- 'Operation has run out of memory' error when running qiime feature-classifier - #3 by Keegan-Evans
- Importing downloaded latest UNITE database for ITS classifier training - #12 by colinbrislawn
Keep us posted!
:qiime2: