this is the first time I try to use metaphlan3 and have no experience of using older version. I install the metaphlan3 through conda.
The install code is as following:
conda create --name metaphlan -c bioconda python=3.7 metaphlan
and the install succeed, Then i try to download database, and the code is as following:
(metaphlan) wangzhenyu@wangzhenyudeMacBook-Pro ~ % metaphlan --install
Downloading MetaPhlAn database
Please note due to the size this might take a few minutes
File /Users/wangzhenyu/opt/miniconda3/envs/metaphlan/lib/python3.7/site-packages/metaphlan/metaphlan_databases/mpa_v30_CHOCOPhlAn_201901.tar already present!
File /Users/wangzhenyu/opt/miniconda3/envs/metaphlan/lib/python3.7/site-packages/metaphlan/metaphlan_databases/mpa_v30_CHOCOPhlAn_201901.md5 already present!
MD5 checksums do not correspond! If this happens again, you should remove the database files and rerun MetaPhlAn so they are re-downloaded
i have checked the forum and related question, but i still could not solve this problem.