mkdir -p failed for path /.config/matplotlib: [Errno 13] Permission denied: '/.config'
Matplotlib created a temporary cache directory at /tmp/matplotlib-9al8v8wj because there was an issue with the default path (/.config/matplotlib); it is highly recommended to set the MPLCONFIGDIR environment variable to a writable directory, in particular to speed up the import of Matplotlib and to better support multiprocessing.
Batch mode: 1 of 1 specimens
Loaded probe_agg for 1 specimens (435,092 probes) in 0.5s
Computed genome offsets
Exporting 1 specimens with 4 workers...

  [1/1]
Exported 1 specimens to viewer/ (3 MB total) in 0.9s