Command run was:
 plot_taxa_summary.py -i /share/nas1/huangls/test/ampliseq-q1/16s2/4.Qiime_analysis/taxa_summary_plot/otu_table_no_singletons_rare_sorted_L2.txt,/share/nas1/huangls/test/ampliseq-q1/16s2/4.Qiime_analysis/taxa_summary_plot/otu_table_no_singletons_rare_sorted_L3.txt,/share/nas1/huangls/test/ampliseq-q1/16s2/4.Qiime_analysis/taxa_summary_plot/otu_table_no_singletons_rare_sorted_L4.txt,/share/nas1/huangls/test/ampliseq-q1/16s2/4.Qiime_analysis/taxa_summary_plot/otu_table_no_singletons_rare_sorted_L5.txt,/share/nas1/huangls/test/ampliseq-q1/16s2/4.Qiime_analysis/taxa_summary_plot/otu_table_no_singletons_rare_sorted_L6.txt,/share/nas1/huangls/test/ampliseq-q1/16s2/4.Qiime_analysis/taxa_summary_plot/otu_table_no_singletons_rare_sorted_L7.txt -o /share/nas1/huangls/test/ampliseq-q1/16s2/4.Qiime_analysis/taxa_summary_plot/taxa_summary_plots/ --x_width 8 --chart_type bar --bar_width 0.5
Command returned exit status: 1
Stdout:
Stderr
Traceback (most recent call last):
  File "/share/work/biosoft/python/Python-v2.7.11/bin/plot_taxa_summary.py", line 278, in <module>
    main()
  File "/share/work/biosoft/python/Python-v2.7.11/bin/plot_taxa_summary.py", line 274, in main
    resize_nth_label, label_type, include_html_legend)
  File "/share/work/biosoft/python/Python-v2.7.11/lib/python2.7/site-packages/qiime/plot_taxa_summary.py", line 1142, in make_all_charts
    resize_nth_label, label_type, include_html_legend))
  File "/share/work/biosoft/python/Python-v2.7.11/lib/python2.7/site-packages/qiime/plot_taxa_summary.py", line 1077, in get_counts
    label_type, include_html_legend))
  File "/share/work/biosoft/python/Python-v2.7.11/lib/python2.7/site-packages/qiime/plot_taxa_summary.py", line 865, in make_HTML_table
    props={'title': title})
  File "/share/work/biosoft/python/Python-v2.7.11/lib/python2.7/site-packages/qiime/plot_taxa_summary.py", line 470, in make_area_bar_chart
    fig = figure(figsize=(plot_width, plot_height))
  File "/share/work/biosoft/python/Python-v2.7.11/lib/python2.7/site-packages/matplotlib/pyplot.py", line 535, in figure
    **kwargs)
  File "/share/work/biosoft/python/Python-v2.7.11/lib/python2.7/site-packages/matplotlib/backends/backend_tkagg.py", line 81, in new_figure_manager
    return new_figure_manager_given_figure(num, figure)
  File "/share/work/biosoft/python/Python-v2.7.11/lib/python2.7/site-packages/matplotlib/backends/backend_tkagg.py", line 89, in new_figure_manager_given_figure
    window = Tk.Tk()
  File "/share/work/biosoft/python/Python-v2.7.11/lib/python2.7/lib-tk/Tkinter.py", line 1814, in __init__
    self.tk = _tkinter.create(screenName, baseName, className, interactive, wantobjects, useTk, sync, use)
_tkinter.TclError: no display name and no $DISPLAY environment variable

mkdir -p ~/.config/matplotlib && echo "backend : Agg" > ~/.config/matplotlib/matplotlibrc