Error: Taxonomic analysis and uninstall Qiime

I am using the following code for bacteria taxonomic analysis in qiime2-2020.2

qiime feature-classifier classify-sklearn
–i-classifier silva-132-99-nb-classifier.qza
–i-reads rep-seqs.qza
–o-classification taxonomy.qza

But I got this error

(1/2) Invalid value for “–i-classifier”: ‘silva-132-99-nb-classifier.qza’ is
not a QIIME 2 Artifact (.qza)
(2/2) Invalid value for “–i-reads”: ‘rep-seqs.qza’ is not a QIIME 2 Artifact

I might have this error because I have tried to remove the latest version of conda I have to replace with am older conda version to fix another error I had before. Any idea about the error above? Also how could I uninstall my Qiime to re-install?

Hello @elolimy. All you should have to do to uninstall QIIME 2 is remove the conda environment with

conda env remove -n X

where X is the name of the environment you’re removing.

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