While attempting to create a virtual scree with the remote cluster, the error arose:
/loader/pyi_importers.py", line 409, in load_module > ImportError: /usr/lib/x86_64-linux-gnu/libX11.so.6: undefined symbol: > xcb_poll_for_reply64 > I am at debaian9 amd64. No problem with local graphiocs. Thasnks for advice francesco pietra