Hi @ju4n_dc,
The greengenes database is small enough to easily create your own classifier without the need for too much computational resources. You can follow the instructions here to train your own using the most recent q2 release. I have actually uploaded another version that was trained using the q2-2019.7 version, this one may work with 2019.10, assuming the scikitbio version has changed between the two versions. If it has, then you should just train your own (the safest bet).
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