error message:(1/1) Invalid value for '--i-classifier': Expected an artifact of at least type TaxonomicClassifier. An artifact of type FeatureData[Sequence] was provided.

Technical Support
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Hello @Frank,

Welcome to the forums! :qiime2:

As it mentions in the error, this command needs a TaxonomicClassifier instead of sequences.

Are you trying to use a custom 12S database to classify your reads? If so, you might want to check out the RESCRIPt plugin or this post about building a 12S database with RESCRIPt.

Let us know if you have any other questions!

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