Etienne Kornobis

Did you install nodejs as specified in [https://jupyterlab.readthedocs.io/en/stable/user/extensions.html](https://jupyterlab.readthedocs.io/en/stable/user/extensions.html) ? I had the same symptoms before installing it. Also to avoid downgrading jupyterlab (0.33 > 0.28) using conda, I installed nodejs...

Another option to consider for converter: https://bmi.inf.ethz.ch/supplements/gff-tools

Related issue here during installation: `> install_github("edmr", username = "ShengLi",build_vignettes=FALSE)` > Downloading GitHub repo ShengLi/edmr@master > from URL https://api.github.com/repos/ShengLi/edmr/zipball/master > Installation failed: error in running command > Warning message: >...