File "/usr/lib/python3.6/site-packages/fractalis/utils.py", line 17, in import_module_by_abs_path spec.loader.exec_module(module) File "/usr/lib/python3.6/site-packages/fractalis/analytics/tasks/shared/array_stats.py", line 16, in <module> importr('DESeq2') File "/usr/lib64/python3.6/site-packages/rpy2/robjects/packages.py", line 453, in importr env = _get_namespace(rname) rpy2.rinterface.RRuntimeError: Error in loadNamespace(name) : there is no package called 'DESeq2'