Dear all, It seems to me that I suffer the same bug in jupyter notebook on a system that does not have python-tornado : I use a sagemath install : in particular python-ipykernel python-ipywidgets python-jupyter-client python-nbconvert pythonpython-sagetex python-zmq sagemath sagemath-jupyter sagetex.
I guess, one, is replacing what python-tornado provides (because I can not install it without removing the aboves packages). Could you point me which one might cause the same bug, if it is possible ? Best regards, Laurent
