In using python_3.9 sif image to import packages : "import plotly.plotly as py" (eg in the /common/vcf/process_vcf_qc.py script in the 2.10.0 version of gadpipeline) is causing an error due to plotly.plotly module being deprecated in python3.9. the chart-studio package (with the chart_studio.plotly module) is to be used in replacement.