Hello.
I have searched for the problem on the forum but could not find the solution.
The version of my QIIME2 is 2021.11, installed in conda.
Here is the command I ran:
$ qiime diversity alpha-group-significance --i-alpha-diversity shannon_vector.qza --m-metadata-file ../metadata.txt --o-visualization shannon-group-significance.qzv
The error message is:
Traceback (most recent call last):
File "/Users/xxx/opt/miniconda3/envs/MetONTIIME_env/lib/python3.8/site-packages/q2cli/commands.py", line 329, in call
results = action(**arguments)
File "", line 2, in alpha_group_significance
File "/Users/xxx/opt/miniconda3/envs/MetONTIIME_env/lib/python3.8/site-packages/qiime2/sdk/action.py", line 245, in bound_callable
outputs = self.callable_executor(scope, callable_args,
File "/Users/xxx/opt/miniconda3/envs/MetONTIIME_env/lib/python3.8/site-packages/qiime2/sdk/action.py", line 453, in callable_executor
ret_val = self._callable(output_dir=temp_dir, **view_args)
File "/Users/xxx/opt/miniconda3/envs/MetONTIIME_env/lib/python3.8/site-packages/q2_diversity/_alpha/_visualizer.py", line 89, in alpha_group_significance
kw_H_all, kw_p_all = scipy.stats.mstats.kruskalwallis(*groups)
File "/Users/xxx/opt/miniconda3/envs/MetONTIIME_env/lib/python3.8/site-packages/scipy/stats/mstats_basic.py", line 1251, in kruskal
raise ValueError('All numbers are identical in kruskal')
ValueError: All numbers are identical in kruskal
This error message "All numbers are identical in kruskal" appears with observed_features_vector.qza and shannon_vector.qza, while faith_pd_vector.qza produces result without an error.
Any suggestion is appreciated. Thank you in advance.