when i use qiime2 to analysis the alpha diversity, the error comes.
the code as following:
index=shannon
qiime diversity alpha-group-significance
--i-alpha-diversity core-metrics-results/{index}_vector.qza \
--m-metadata-file metadata.txt \
--o-visualization core-metrics-results/{index}-group-significance.qzv
Hello and welcome to 
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Cheers
V
OK, thanks for your help, and i have solved this problem from another post.
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